111 results on '"BRACHYTHERAPY"'
Search Results
2. EFFECTS OF BRACHYTHERAPY ON QUALITY OF LIFE AND FUNCTIONALITY IN THE TREATMENT OF CERVIX CANCER
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Erilaine de Freitas Corpes, Gerciane dos Anjos Gonçalves, Ana Caroline Andrade Oliveira, Viviane da Silva Pacífico, Régia Christina Moura Barbosa Castro, Paulo César de Almeida, and Isadora Marques Barbosa
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Cervix Neoplasms ,Women’s Health ,Oncology ,Brachytherapy ,Quality of Life. ,Nursing ,RT1-120 ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Objective: to assess the effect of brachytherapy on functionality and quality of life of women with cervix cancer. Method: a descriptive and cross-sectional study carried out between December 2019 and February 2020 with 33 women with uterine neoplasia undergoing brachytherapy, followed up at Centro Oncológico do Nordeste - Brazil. The Funtional Assessment of Cancer Therapy – Cervix Cancer instrument was applied. The means of the subscales were compared and their mutual correlation was analyzed by applying the ANOVA and Student’s t tests. Results: requirements focused on self-image, sexuality and urinary complaints were evidenced. The mean of additional concerns was lower in the age group from 50 to 59 years old, when compared to the mean values in the age groups from31 to 49 years old (p=0.004) and from 60 to 75 years old (p=0.002). Conclusion: addressing issues related to sexuality and urinary complaints contribute to early identification of the symptoms caused by brachytherapy, as well as the implementation of measures, providing quality of life for the patient.
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- 2022
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3. Is Surgical Treatment an Option for Locally Advanced Cervical Cancer in the Presence of Central Residual Tumor after Chemoradiotherapy?
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Samet Topuz, Alpaslan Kaban, Seden Küçücük, and Yavuz Salihoglu
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cervical cancer ,brachytherapy ,chemoradiotherapy ,recurrence ,resistant tumor ,Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Objective To evaluate the outcomes of surgical treatment in patients with chemoradiotherapy (CRT)-resistant and locally advanced cervical cancer (LACC). Methods Patients with LACC who underwent surgery due to resistance to CRT between 2005 and 2015 were reviewed retrospectively. Disease-free survival (DFS) and overall survival (OS) related factors were analyzed. Results A total of 23 patients were included in the study and the median age was 51 years old. A total of 14 patients (60.8%) experienced recurrence; among these recurrences, 8 of them were local, 5 were distant, 1 was both distant and local. A total of 9 patients (39%) died. The Median DFS and OS durations were 15 and 32 months, respectively. A total of 17 patients (74%) had undergone simple hysterectomy, 4 (17%) radical hysterectomy, and 2 (9%) total pelvic exenteration. Postoperative grade 3 and 4 complications were seen in 12 patients (52%). Macroscopic tumor presence in the pathology specimen was associated with distant recurrence and positive surgical margins with local recurrence (Log-Rank test p = 0.029 and p = 0.048, respectively). The only factor associated with OS was surgical margin positivity (Log-Rank test p = 0.008). The type of surgery, grades 3 and 4 postoperative complications, brachytherapy, and tumor histology were not associated with recurrence. Conclusion In patients with LACC, hysterectomy is an option in the presence of a central residual tumor after CRT. However, the risk of grades 3 and 4 complications of performed surgery is high. The presence of macroscopic tumor in the pathology specimen and positive surgical margins are poor prognostic factors. The goal of the surgeon should be to achieve a negative surgical margin. It does not seem important if the surgery is simple or radical.
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- 2020
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4. REPERCUSSÕES DA BRACQUITERAPIA NA QUALIDADE DE VIDA E FUNCIONALIDADE NO TRATAMENTO DO CÂNCER DE COLO UTERINO.
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de Freitas Corpes, Erilaine, Gonçalves, Gerciane dos Anjos, Oliveira, Ana Caroline Andrade, Pacífico, Viviane da Silva, Castro, Régia Christina Moura Barbosa, de Almeida, Paulo César, and Barbosa, Isadora Marques
- Abstract
Copyright of Cogitare Enfermagem is the property of Cogitare Enfermagem and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
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5. DIAGNÓSTICOS DE ENFERMAGEM EM PACIENTES COM CÂNCER SUBMETIDOS À RADIOTERAPIA: ESTUDO DE REVISÃO.
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da Rosa Noronha, Isabela, Nascimento Pinto, Eriane, da Silva Pires, Ariane, Fuentes Pérez Júnior, Eugênio, da Rosa Noronha, Isabele, and Tavares Jomar, Rafael
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To identify nursing diagnoses in cancer patients undergoing radiotherapy. Review study that gathered, analyzed and synthesized results from original articles that identified nursing diagnoses from NANDA-I in cancer patients undergoing radiotherapy. The search for articles was carried out in five electronic databases based on the combination of descriptors Nursing Process OR Nursing Diagnosis AND Radiotherapy OR Brachytherapy OR Radioisotope Teletherapy. The review comprised four articles that allowed the identification of 33 nursing diagnoses, 28 of which were real and five of risk, belonging to 20 classes in 10 domains of NANDA-I. Half of the articles described the following nursing diagnoses: impaired urinary elimination, constipation, diarrhea, fatigue, sexual dysfunction, risk of infection and impaired skin integrity. The identification of 33 nursing diagnoses shows the complexity involved in the care provided to cancer patients undergoing radiotherapy. [ABSTRACT FROM AUTHOR]
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- 2021
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6. Analysis of patients with prostate cancer care at a reference hospital in the state of Tocantins, suitable for brachytherapy
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André de Souza Bezerra, Carlos Alberto Zeituni, and Maria Elisa Chuery Martins Rostelato
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brachytherapy ,adenorcarcinoma of prostate ,Tocantins. ,Science - Abstract
Observation and identification of predictive factors for results and morbidity are essential in the ideal selection of patients who can use brachytherapy as a treatment modality for prostate cancer. Thus, the objective of this research is to analyze the population of patients with prostate cancer treated at the General Public Hospital of Palmas in 2015, in the state of Tocantins. The method used was quantitative, with the characteristics of a retrospective, transversal and descriptive analysis. Held in the largest state health unit, the General Public Hospital of Palmas that, despite its large dimensions, lives with the main problems of the Unified Health System, such as overcrowding and shortages. It was found that most of the patients seen corresponded to the age of 70 to 79 years, making 45%, followed by patients aged between 60 and 69 years, with 33%. Most of the individuals attended were from the state of Tocantins, but some lived in an adjacent city in the state of Pará. Data related to the Gleason score showed that there was a predominance of levels 6 and 7 indicating intermediate grade tumors, considering that the most of the observed population was older. It was concluded that the analyzed patients had a predominant staging of CaP II and III, thus most of the individuals, 23 of the 35 analyzed, were not able to undergo brachytherapy due to the high degree of disease staging.
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- 2021
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7. Epidemiological profile of women with gynecological cancer in brachytherapy: a cross-sectional study
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Luciana Martins da Rosa, Maria Eduarda Hames, Mirella Dias, Gisele Martins Miranda, Camila Beltrame Bagio, Maristela Jeci dos Santos, and Luciana Puchalski Kalinke
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Genital Neoplasms, Female ,Epidemiology ,Nursing ,Brachytherapy ,Radiotherapy ,RT1-120 - Abstract
ABSTRACT Objective: to analyze the sociodemographic and clinical profile of women with gynecological cancer in brachytherapy. Method: a cross-sectional study including records of 1,930 visits of women in brachytherapy assisted between 2006-2016 in Santa Catarina (Brazil). Collection was performed in 2019, in an institutional bank, submitted to frequency measurements, chi-square test, 95% confidence intervals, significance level of 0.05. Results: women aged 40-59 years (47.2%), white (93.3%); with elementary school (65%); cervical cancer (78.5%); stages II-III (73.3%) figured prominently. In the comparison of staging proportions in the topography variable, a higher proportion of malignant neoplasm of cervix uteri unspecified in the grouped III-IV staging (84.6%). Conclusion: the profile analysis shows the need for screening and health education for prevention and/or early detection of gynecological cancers and training of nurses specialized in radiotherapy to care for women’s health.
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- 2021
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8. Development of a yz scan system for the improvement of an automatic system of radioactive seed implants in prostate brachytherapy
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Leonardo Santiago Melgaço Silva
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Brachytherapy ,implant automatic systems ,radioactive seeds. ,Science - Abstract
Brachytherapy is the use of radiotherapy with insertion of radiation sources close to the site that needs treatment. It has become an extremely sought-after option by research fields for its impressive efficiency and practicality. In addition to being a fast-paced procedure, it allows patients to leave hospital care very soon after it is done, without pain or with minor discomfort, which can be considered an advantage. The brachytherapy procedure is divided into two stages, obtaining images of the region where seed implantation will take place and the application itself. The images are obtained by ultrasonography, which will guide the insertion of the needle into the patient's body. During the injection, the patient is anesthetized and immobilized, so that movements that compromise the accuracy of the needle, which, by the current manual method, are already subject to oscillations are avoided. Currently the application of radioactive seeds is done manually by a clinician who uses needles and monitors their positions through the images generated by ultrasound equipment. Thus, the main objective of this project was to improve the prototype of the Prostate Seed Implantation System (SISP), developed by the Nuclear Engineering Department of the UFMG (Nuclear Engineering Department). Thus, the device allows automated scanning on x, y and z axes, facilitating the application of radioactive seeds in prostate brachytherapy treatments, which in current treatments are done manually by the clinician. And the possibility of controlling this movement via BLUETOOTH technology.
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- 2021
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9. Anisotropy function of a new 192-Ir brachytherapy source
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Rodrigo Teixeira Abreu, Lucas V. Angelocci, Beatriz R. Nogueira, Hamona N. Santos, Carlos Alberto Zeitune, and Maria Elisa C. M. Rostelato
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Brachytherapy ,dosimetry ,192-Iridium. ,Science - Abstract
Brachytherapy is a type of radiotherapy that uses radioactive sources (seeds, wires, among others) close to the tumor. Is important to provide a detailed description of seed dosimetry, so only the tumor will be irradiated avoiding unnecessary dose on adjacent organs and structures. To evaluate the dosimetric parameter of the anisotropy function for a new brachytherapy source, this work proposes the use of microcube TLD-100 dosimeters to find the dose rate using the AAPM Task Group 43 protocol (TG-43). The anisotropy function represents dose distribution around the source and has a major role for characterization of a new iridium source being implemented in Brazil. The value of D(r,θ) was measured using Solid Water phantoms, r value being the distance from the geometric center of the source to the position of the dosimeter on the phantom, and θ being the angle formed between the longitudinal axis of the source and the line connecting the geometric center to the TLD. Monte Carlo calculations were performed to evaluate the anisotropy function to validate the experimental measurements. For each distance value (r), an anisotropy function was plotted (1.0, 2.0, 3.0, 4.0, 5.0, and 10.0 cm). The results obtained with Monte Carlo calculations agreed ±2% with the experimental values for r greater than 3.0 cm, so these results show a good distribution of dose around the seed considering the high energy of 192-Ir (average of 380 KeV) and encapsulation thickness.
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- 2021
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10. Dose-rate constant and air-kerma strength evaluation of a new 125I brachytherapy source using Monte Carlo
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Camila de Oliveira Primo
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brachytherapy ,iodine-125 ,Monte-Carlo method. ,Science - Abstract
Brachytherapy is a modality of radiotherapy which treats tumors using ionizing radiation with sources located close to the tumor. The sources can be produced from several radionuclides in various formats, such as Iodine‑125 seeds and Iridium‑192 wires. In order to produce a new Iodine‑125 seed in IPEN/CNEN and ensure its quality, it is essential to describe the dosimetry of the seed, so when applied in a treatment the lowest possible dose to neighboring healthy tissues can be reached. The report by the AAPM’s Task Group 43 U1 is a document that indicates the dosimetry procedures in brachytherapy based on physical and geometrical parameters. In this study, dose-rate constant and air-kerma strength parameters were simulated using the Monte Carlo method radiation transport code MCNP4C. The air-kerma strength is obtained from an ideal modeled seed, since its actual value should be measured for seeds individually in a specialized lab with a Wide-Angle Free-Air Chamber (WAFAC). Dose-rate constant and air-kerma strength are parameters that depends on intrinsic characteristics of the source, i.e. geometry, radionuclide, encapsulation, and together they define the dose-rate to the reference point, defined as the dose-rate to a point 1 cm away from the geometric center of the source, in its transverse plane. This study presents the values found for these parameters with associated statistical uncertainty, and is part of a larger project that aims the full dosimetry of this new seed model, including experimental measures.
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- 2021
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11. A PROPOSAL OF PROCESS VALIDATION IN THE IMPLEMENTATION OF GOOD MANUFACTURING PRACTICES IN BRACHYTHERAPY SOURCES PRODUCTION
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Tatyana Spinosa Baptista, Anselmo Feher Feher, Bruna Teiga Rodriguez, Carlos Alberto Zeituni, João Augusto Moura, and Maria Elisa Rostelato
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GMP ,process validation ,brachytherapy ,iodine-125 seeds ,Science - Abstract
New laboratories for brachytherapy sources production are being implemented in our facility at IPEN, in São Paulo. A great challenge implementing a production laboratory is to comply with the Good Manufacturing Practices (GMPs), which involves process validation and all supporting activities such as cleaning and sanitization. Much more than compliance with regulatory guidelines, required for certification and inspections, a validation builds large process knowledge, provides possibilities for optimization and improvement, increasing the degree of maturity of all people involved and the quality system. The process validation results in a document that certifies that any procedure, process, equipment, material, operation or system leads to the expected results. This work focused on the new laboratory, been assembled to produce small iodine-125 seeds. The process validation was performed three times for evaluation. The parameters evaluated in this study were: the source welding efficiency and the leakage tests results (immersion test). The welding efficiency doesn’t have an established parameter, since is visually evaluated by the operator, and the leakage detection must be under 5 nCi / 185 Bq, accordingly with the ISO 9978. We observed values were average 79-87% production efficiency and leakage tests were under 5 nCi/seed. Although established values for the global efficiency aren’t available in the literature, the results showed high consistency and acceptable percentages, especially when other similar manufacturing processes are used in comparison (average 85-70% found in the literature for other similar metallic structures). Those values will be important data when drafting the validation document and to follow the Good Manufacturing Practices (GMPs).process
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- 2021
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12. Práticas de autocuidado e os efeitos colaterais imediatos em mulheres com câncer ginecológico em braquiterapia.
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da Silva, Rosimeri Helena, da Rosa, Luciana Martins, Dias, Mirella, Chiodelli Salum, Nádia, Severo Varela, Ana Inêz, and Radünz, Vera
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Objective: to reveal the immediate side effects and self-care practices adopted by women with gynecological cancer submitted to brachytherapy. Method: narrative research, conducted with 12 women, in southern Brazil, between December/2018 and January/2019, including semi-structured interviews submitted to content analysis. Results: three thematic categories emerged from the analysis: Care oriented and adopted by women in pelvic brachytherapy; Immediate side effects perceived by women in pelvic brachytherapy; Care not guided by health professionals. The care provided by the nurses most reported by the women was vaginal dilation, use of a shower and vaginal lubricant, tea consumption, cleaning, and storage of the vaginal dilator. The side effects most frequently mentioned in the interviews were urinary and intestinal changes in the skin and mucous membranes. Conclusion: nursing care in brachytherapy must prioritize care to prevent and control genitourinary and cutaneous changes, including self-care practices. [ABSTRACT FROM AUTHOR]
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- 2021
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13. ESTENOSE VAGINAL PÓS-BRACQUITERAPIA: OCORRÊNCIAS E REPERCUSSÕES EM MULHERES COM CÂNCER GINECOLÓGICO.
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Pikula, Debblye, Fabicz, Silvânia, de Lima Carmo, Rafael, Araújo, Jeferson Santos, Rosa, Luciana Martins da, and Conceição, Vander Monteiro da
- Abstract
Copyright of Cogitare Enfermagem is the property of Cogitare Enfermagem and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2021
- Full Text
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14. Aspects of an automatic system of implants of radioac-tive seeds and anatomic object simulator for tests in prostate brachytherapy.
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Leonardo Santiago Melgaço Silva, Viviane Vitória Bento Braga, and Tarcisio Passos Ribeiro Campos
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Brachytherapy ,implant automatic systems ,radioactive seeds. ,Science - Abstract
This work presents the development of an automatic radioactive seed implantation system (PSIS). PSIS may assist the testing permanent implants procedure in the prostate. These tests will be important in measurements of absorbed doses in the pelvic structures, involving the organs and tissues at risk to improve planning, seed positioning and dosimetry. The automated Prostate Seed Implant System (PSIS) has been designed to meet operational needs, which offers the freedom when positioning the brachytherapy needle inside the treatment area ensuring repeatability and fidelity to the planned treatment. Both the ultrasound probe and the seed implant needle are driven by stepper motors, ATMEGA microcontroller, bearings, aluminum shafts and a GUI (Graphical User Interface). Movement of both the probe and the needle holder was performed by fixed spindle on a threaded rod going through a stepper motors by a coupling. These engines were chosen due to the necessity of movements precision that these types of motors provide. The project was developed and the PSIS prototype was assembled. The prototype presented acceptable operating characteristics for prostate implants. The advantage of this system is that the automation of the application provides an accurate positioning and movement of both probe and seed application. In addition to this study, seeds implantation tests will be performed, and such tests will be essential in protocol validation processes.
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- 2019
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15. Dosimetric effectiveness in implants with distinct ho166-seed distributions in a prostate model
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Viviane Vitória Bento Braga and Tarcísio Passos Ribeiro de Campos
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prostate cancer ,brachytherapy ,Ho-166 seeds. ,Science - Abstract
Currently, there is a need to produce new therapeutic techniques for the treatment of prostate tumors, considering the high incidence of the disease and significant morbidity rates associated with surgery and radiotherapy. Simulations in brachytherapy produce essential information about the efficiency and dosimetric efficacy compared to other techniques. This study estimated the efficiency of dosimetry by parameters of merit generated from volumetric distributions of absorbed doses simulating two spatial distributions of Ho-166 seeds in a prostate model. A computer voxel model was developed, using the SISCODES (Computational System for Dosimetry by Neutrons and Photons by Stochastic Methods applied to radiology and radiotherapy) code. The virtual model reproduced a cubic box, filled with muscle equivalent tissue (TE), in which a 5-cm diameter sphere with TE-prostate was positioned 2-cm from the air-interface. Two Ho-166 seed distributions were employed with distinct pitches: 9 and 10 mm, with same distance between seed of 8mm in a fillet (needle). The MCNP5 code generated the energy deposited per unit mass in each voxel .The spatial dose distributions were obtained for each of the seed distributions. The following parameters-of-merit were evaluated: maximum dose values and histograms. The parameters were compared between the two simulated groups. It was possible to evaluate the most appropriate distribution to the prostate brachytherapy, which has been shown to be a function of the injected seed activity.
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- 2019
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16. REPERCUSSÕES PSICOSSOCIAIS DO TRATAMENTO RADIOTERÁPICO PARA O CÂNCER DO COLO UTERINO: UMA ABORDAGEM QUALITATIVA
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Natalia Beatriz Lima Pimentel, Felipe Cardoso Modesto, Vivian Cristina Gama Souza Lima, Adriana Maria de Oliveira, Karla Biancha Silva de Andrade, Patrícia dos Santos Claro Fuly, and Mauro Salvador Caldeira dos Santos
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Impacto Psicosocial ,Radiotherapy ,Impacto Psicossocial ,Psycho-Oncology ,Estresse Psicológico ,Psychosocial Impact ,Braquiterapia ,Stress ,Psicooncología ,Psico-Oncologia ,Radioterapia ,Brachytherapy ,Psychological ,Distrés Psicológico ,General Nursing - Abstract
RESUMO Objetivo: compreender as repercussões psicossociais do pós-tratamento radioterápico para o câncer do colo uterino. Método: estudo qualitativo, com a participação de pacientes em pós-tratamento radioterápico para o câncer do colo uterino em um ambulatório de enfermagem oncoginecológica, localizado no Município do Rio de Janeiro - Brasil. Os dados foram coletados durante os meses de março e abril de 2019 por meio de entrevista aberta e submetidos à análise de conteúdo. Resultados: definiram-se quatro categorias: o constructo de papéis sociais: a perda da identidade feminina; a sexualidade da mulher pós-tratamento para o câncer do colo uterino: repercussões conjugais; dificuldades de adaptação à nova condição de vida: reconstruindo a imagem corporal; convivendo com o câncer do colo uterino: repensando a vida e reconstruindo valores através da rede de apoio. Considerações finais: os resultados contribuem para o direcionamento do cuidado, aumentando a qualidade de vida e auxiliando a reorganização da vida profissional, social e familiar dessas mulheres. ABSTRACT Objective: to understand the psychosocial repercussions of post radiotherapy treatment for cervical cancer. Method: qualitative study, with the participation of patients in post radiotherapy treatment for cervical cancer in an onco-gynecologic nursing outpatient clinic, located in the Municipality of Rio de Janeiro - Brazil. Data were collected during the months of March and April 2019 by means of open interview and submitted to content analysis. Results: four categories were defined: the construct of social roles: the loss of female identity; the sexuality of post-treated women for cervical cancer: marital repercussions; difficulties in adapting to the new life condition: rebuilding the body image; living with cervical cancer: rethinking life and rebuilding values through the support network. Final considerations: the results contribute to the direction of care, increasing the quality of life and helping these women reorganize their professional, social, and family lives. RESUMEN Objetivo: conocer las repercusiones psicosociales del tratamiento post-radioterapia del cáncer de cuello de útero. Método: estudio cualitativo, con la participación de pacientes en tratamiento post radioterapia para cáncer de cuello uterino en una consulta externa de enfermería oncoginecológica, ubicada en el Municipio de Río de Janeiro - Brasil. Los datos fueron recolectados durante los meses de marzo y abril de 2019 a través de una entrevista abierta y fueron sometidos a un análisis de contenido. Resultados: se definieron cuatro categorías: la construcción de los roles sociales: la pérdida de la identidad femenina; la sexualidad de las mujeres después del tratamiento del cáncer de cuello uterino: las repercusiones conyugales; las dificultades de adaptación a la nueva condición de vida: la reconstrucción de la imagen corporal; la convivencia con el cáncer de cuello uterino: el replanteamiento de la vida y la reconstrucción de los valores a través de la red de apoyo. Consideraciones finales: los resultados contribuyen a la orientación de los cuidados, aumentando la calidad de vida y ayudando a la reorganización de la vida profesional, social y familiar de estas mujeres.
- Published
- 2023
17. Analysis in organs at risk for gynecological radiotherapy by High Dose Rate Brachytherapy using Manchester point A, ICRU 38 Report and American Braquitherapy Society recomendation
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Gustavo Piriz, Yolma Banguero, Alejandro De Rosa, Carlos Vega, and Aldo Quarneti
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ICRU 38 ,Brachytherapy ,HDR. ,Science - Abstract
The gynecological treatment with High Dose Rate (HDR) Brachytherapy imply deliver dose to the tumor and spare the dose in organs at risk. In this work we apply the recommendations for prescribing dose given by the International Commission of Radiation Units (ICRU) reports 38, 89 and the American Brachytherapy Society (ABS). With both schemes of optimization, recommendation of ICRU 38 or ABS with vaginal point from ICRU 89. Were analyze the dose received by the organs at risk, in this case rectum and bladder and also the irradiated volume for patients that receive HDR brachytherapy treatment. An afterloading technique is applying with a Eckert & Ziegler MultiSource® equipment using a Co-60 source, 30 patients with 4 applications with cervical cancer are planning with HDR brachytherapy. This work analyze 120 single applications with orthogonal images using the treatment planning system (TPS) HDRplus version 3.0.4 through “Auto dwell time determination” optimization method, using the recommendation for optimization dose from the ABS and vaginal point from ICRU 89 . The volume of the isodose curve of prescription is 15% less using ABS recommendation than ICRU 38. The bladder dose is 11% and rectum dose is 21% less using ABS recommendation than ICRU 38. The analysis of dose prescription using ICRU 38 and ABS recommendations in the patients analyzed shows less irradiated volume at the dose prescribed and also less mean dose in rectum and bladder of applications using ABS in contrast with ICRU 38 recommendations.
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- 2018
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18. O Risco Genético das Terapias do Câncer
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Minicucci, Eliana Maria, Salvadari, Daísy Maria Favero, Ribeiro, Lúcia Regina, Maia, Maria Aparecida Conti, and Camargo, João Lauro Viana de
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Radioterapia ,Radiotherapy ,Brachytherapy ,Chemotherapy ,Quimioterapia ,Braquiterapia ,Risco Genético ,Genetic Risk - Abstract
The presente paper indicates the effects of the most common practices for cancer treatment on the genetic sample of the patient. The main objective of this report is to stress the importance of the risk/benefit assessment of the different therapeutic protocols adopted for cancer and the need for the development of new therapeutic practices and chemotherapy agents. After stressing the fact that cancer is a genetic disease that develops through multiple steps, the effects of ionizing radiation and of some therapeutic Chemicals on the DNA are presented. Besides, the deleterious effects on the DNA of the technical personnel who provides treatment are also indicated. Therefore, this paper discusses tn a general way the genetic damage induced by anti-neoplastic agents, which increases the risk for the development of another primary tumor. O presente artigo descreve as conseqüências de algumas terapias utilizadas para o câncer sobre o material genético de pacientes com neoplasias. O objetivo é ressaltar a importância da avaliação da relação risco/ benefício dos diferentes tratamentos utilizados para o câncer, e da continuidade de pesquisas para o desenvolvimento de novas formas de terapia e de novas drogas antineoplásicas. Faremos breve exposição sobre o processo de carcinogênese de múltiplas etapas, destacando o conceito geral de que o câncer é uma doença genética. São apresentados os efeitos mutagênicos das radiações ionizantes e de algumas classes de quimioterápicos sobre o material genético. Além dos efeitos deletérios desses agentes para o paciente, são também relatados efeitos nocivos para os indivíduos que manipulam ou que são responsáveis pela condução dos tratamentos. Abordaremos de modo geral, os danos genéticos induzidos por agentes antineoplásicos mutagênicos tanto para o paciente como para os indivíduos que os manipulam, predispondo-os ao desenvolvimento de um segundo tumor ou de um tumor primário, respectivamente.
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- 2022
19. AVALIAÇAO E CLASSIFICAÇAO DA ESTENOSE VAGINAL NA BRAQUITERAPIA: VALIDAÇAO DE CONTEÚDO DE INSTRUMENTO PARA ENFERMEIROS.
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Nunes da Silva, Rafaela Dutra, Martins da Rosa, Luciana, Radünz, Vera, and Cesconetto, Daiana
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DELPHI method ,RESEARCH methodology ,RADIOISOTOPE brachytherapy ,RESEARCH evaluation ,CERVIX uteri tumors ,RESEARCH methodology evaluation - Abstract
Copyright of Texto & Contexto Enfermagem is the property of Universidade Federal de Santa Catarina, Programa de Pos-Graduacao de Enfermagem and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
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20. Avaliação da dose em braquiterapia acoplada à terapia por captura de nêutron por boro
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Chaves, Iara F. and Campos, Tarcísio P.R.
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Radioterapia ,Radiotherapy ,Brachytherapy ,BNCT ,Braquiterapia - Abstract
This paper introduces a new technique for radiotherapy based on the coupling of two distinct methods: the brachytherapy provided by discrete sources of neutrons and photons placed in intracavitary regions of patient, and the Boron Neutron Capture Therapy (BNCT). With the goal of studying the performance of the coupled treatment, computational evaluations are proposed to quantify the absorbed dosages. Analysis of possible neutrons sources, such as discret neutron sources, nuclear reator, linear acelerators - LINACs, and special devices for cold neutrons are presented in order to verify the feasibility of the instalation of neutron generators in hospitais. Este trabalho descreve uma nova técnica radioterapêutica baseada no acoplamento de dois métodos distintos: a braquiterapia, proporcionada pela emissão de nêutrons e raios gama de fontes mistas discretas colocadas em regiões intracavitárias do paciente, e a captura neutrônica por boro (BNCT). Com o objetivo de estudar a “performance” do tratamento acoplado, avaliações computacionais são propostas para quantificar as doses absorvidas. Análises de possíveis fontes geradoras de nêutrons, a saber: fontes mistas discretas, reatores nucleares, aceleradores lineares tipo LINAC e dispositivos de nêutrons frios, são apresentadas com o intuito de verificar a viabilidade técnica de instalação e uso da terapia de nêutrons em hospitais.
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- 2022
21. Câncer do Endométrio: Tratamento Adjuvante Pélvico apenas com Radioterapia Externa após Cirurgia sem Linfadenectomia
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Faria, Sérgio Luiz and Ferrigno, Robson
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Radioterapia ,Radiotherapy ,Brachytherapy ,Braquiterapia ,Câncer do Endométrio ,Endometrial Cancer - Abstract
Median incidence of endometrial câncer in Brazil is of 6 new cases/100.000 women/year. Radiation therapy has been used as adjuvant treatment either pre or post surgery, given as teletherapy or brachytherapy or both. There is a consensus that FIGO stages II and III should receive pelvic irradiation, with or without brachytherapy. However most of such patients (>75%) have stage I câncer at diagnosis. Thus, there are prognostic subgroups depending on how deep the miometrium is invaded and the histologic grade ofthe tumor. Stage I câncer that invades more than 1/2 miometrium and/or is of high grade usually is also treated with adjuvante irradiation. Does the addition of intracavitary vault brachytherapy to externai beam radiotherapy (EBRT) result in improvedpelvic control? This question is yet to be accurately answered. In our Service, patients with endometrial câncer who have indication of adjuvant radiation have received only EBRT without brachytherapy, since 1990. Basic surgery for those patients has been a total abdominal hysterectomy and bilateral salpingo-oophorectomy without routine lymphnode dissection. We reviewed retrospectively 61 patients with endometrial câncer treated this way between 1990-95, with Cobalt, 4 fields, total dose of 45Gy-50.4Gy in 25 to 28 fractions. Median follow up of33 months showed only one pelvic (vaginal) relapse, 6/61 patients died and only one patient had moderate late bowel complication. Those results compare with others published in the literature. A incidência mediana de câncer endometrial no Brasil é de 6 casos novos/cem mil mulheres/ ano. A radioterapia tem sido usada como tratamento adjuvante pré ou pós cirurgia, com ou sem braquiterapia. Há consenso de que os casos estadiados como II e III pela FIGO recebam irradiação pélvica, com ou sem braquiterapia. Entretanto, 75% dos casos são estádios I. Por isso há subgrupos prognósticos que dependem da profundidade de invasão do miométrio e do grau histológico do tumor. Tumores em estádio I com invasão profunda do miométrio e/ou alto grau têm também sido tratados com irradiação. A adição de braquiterapia vaginal após a radioterapia externa resulta em melhor controle de falha pélvica? Esta é uma pergunta não resolvida. Desde 1990 temos feito apenas radioterapia externa nos casos de câncer do endométrio que têm indicação de irradiação adjuvante, sem braquiterapia. A cirurgia básica destes casos têm sido histerectomia abdominal total + salpingo-ooforectomia bilateral sem dissecção de rotina dos linfonodos pélvicos. Foram revistas retrospectivamente 61 destes casos tratados no nosso serviço, com 4 campos pélvicos. Cobalto, dose total entre 45Gy-50,4Gy em 25 a 28 frações. Seguimento mediano de 33 meses mostrou um único caso de falha em vagina, 6/61 casos de pacientes que morreram e apenas um caso de complicação intestinal moderada. Estes resultados se assemelham com outros da literatura que não usam a braquiterapia de rotina após a irradiação externa na pelve.
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- 2022
22. PAIN EVALUATION IN WOMEN WITH CERVICAL-UTERINE NEOPLASMS DURING BRACHYTHERAPY
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Luciana Martins da Rosa, Fernanda Lunardi, Maria Eduarda Hames, Gisele Martins Miranda, Maristela Jeci dos Santos, María Angélica Arzuaga-Salazar, and Conselho Nacional de Desenvolvimento Científico e Tecnológico, Convênio CAPES/COFEN/765/2017
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Oncología Médica ,Oncologia ,Brachytherapy ,Enfermagem ,Uterine Cervical Neoplasms ,Pain Perception ,Nursing ,Oncology ,Ciências da Saúde ,Percepção da dor ,Câncer do colo do útero ,Braquiterapia ,Enfermería ,Percepción del dolor ,Neoplasias del Cuello Uterino ,General Nursing - Abstract
RESUMO Objetivo: avaliar a intensidade da dor em mulheres submetidas à braquiterapia pélvica. Método: estudo transversal, analítico, quantitativo realizado em instituição oncológica (Santa Catarina/Brasil), incluindo 97 mulheres em braquiterapia pélvica, com (grupo 1) ou sem (grupo 2) sedação anestésica. Coleta de dados entre setembro de 2018 a julho de 2019, por entrevista estruturada e no prontuário da paciente. Intensidade da dor avaliada em cinco momentos por escala visual analógica. Análise incluiu medidas de frequência, teste qui-quadrado, análise de resíduos padronizados ajustados, equações de estimações generalizadas, teste post-hoc de Bonferroni; nível de significância 0,05. Resultados: 51 mulheres (52,6%) referiram dor prévia à braquiterapia, 73 (75,3%) após. Na retirada dos aplicadores, grupo 1 atingiu 55,9% na proporção de presença de dor, grupo 2 36,8%. Houve significância da percepção dolorosa por momento/sedação (p
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- 2022
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23. A INCIDÊNCIA DE INCONTINÊNCIA URINÁRIA NOS TRATAMENTOS DE BRAQUITERAPIA E PROSTATECTOMIA RADICAL NO CÂNCER DE PRÓSTATA: ABORDAGEM DE ABRANGÊNCIA EM PROL DA PRÁTICA CLÍNICA.
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Fogaça Saud, Leticia, Vaz Campos, Gabriela, Maniezzo, Renan, Pereira Marques, Yasmim Maria, and Ferreira de Rezende, Laura
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- 2018
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24. Comparação dos tratamentos do carcinoma espinocelular avançado do esofago pela teleterapia exclusiva e pela teleterapia associada à braquiterapia Comparison of treatment using teletherapy (external beam radiation) alone versus teletherapy combined with brachytherapy for advanced squamous cell carcinoma of the esophagus
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Renato Samea and Laercio Gomes Lourenço
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Neoplasias esofágicas ,Esôfago ,Radioterapia ,Braquiterapia ,Esophageal neoplasm ,Esophagus ,Radiotherapy ,Brachytherapy ,Surgery ,RD1-811 ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
RACIONAL: O câncer do esôfago ainda constitui neoplasia de difícil tratamento e de prognóstico muito ruim. OBJETIVO: Comparar a resposta do tratamento exclusivo com teleterapia isolada versus teleterapia associada à braquiterapia endoluminal de doentes portadores de carcinoma espinocelular avançado do esôfago. MÉTODO: Foram estudados 49 doentes portadores de carcinoma espinocelular avançado do esôfago médio em estádio clínico III (TNM). Os doentes foram divididos em dois grupos de doentes. O primeiro grupo foi submetido à teleterapia exclusiva com acelerador linear de partículas, dose média de 6000 cGy e o segundo à teleterapia na dose de 5040 cGy associada à braquiterapia endoluminal com Iridium 192 na dose de 1500 cGy. A braquiterapia foi iniciada uma a duas semanas após o término da teleterapia e dividida em três aplicações semanais de 500 cGy. Foram avaliadas as variáveis idade, sexo, raça, hábitos (tabagismo e etilismo), índice de massa corpórea (IMC), complicações com o tratamento, benefícios (melhora da dor e satisfação alimentar) e sobrevivência. RESULTADOS: Os resultados quanto a qualidade de vida (satisfação alimentar, paliação da disfagia e dor) foram melhores no grupo submetido à teleterapia associada a braquiterapia. A sobrevivência foi maior no grupo de teleterapia associada a braquiterapia. CONCLUSÃO: Apesar do índice de cura do câncer espinocelular do esôfago ser quase nulo quando tratado com irradiação isolada, esta terapêutica constitui-se em uma forma de tratamento paliativo para grande parte dos doentes em que existe contra-indicação cirúrgica.BACKGROUND: Squamous cell carcinoma of the esophagus is still a difficult tumor to treat with very poor prognosis. AIM: To compare the response to teletherapy treatment (external beam radiotherapy) alone versus teletherapy combined with brachytherapy for patients with advanced squamous cell carcinoma of the esophagus. METHODS: Were studied 49 patients with advanced squamous cell carcinoma of the esophagus on clinical stage III (TNM-1999). They were separated into two groups. The first, underwent radiation therapy alone with linear accelerator of particles, average dose of 6000 cGy and the second to external beam radiation therapy at a dose of 5040 cGy combined with brachytherapy with Iridium 192 at a dose of 1500 cGy. Brachytherapy started one to two weeks after the end of teletherapy, and it was divided into three weekly applications of 500 cGy. Age, gender, race, habits (smoking and drinking), body mass index (BMI), complications with treatment benefits (pain relief and food satisfaction) and survival were analyzed. RESULTS: The quality of life (food satisfaction, and pain palliation of dysphagia) were better in the group treated with external beam radiation therapy combined with brachytherapy. Survival was higher in the brachytherapy combined with external beam radiation therapy alone. CONCLUSION: Although the cure rate of squamous cell cancer of the esophagus is almost nil when treated with irradiation alone, this therapy is a form of palliative treatment for most patients in whom surgical contraindication exists.
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- 2011
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25. Avaliação da biodegradação de matrizes porosas à base de hidroxiapatita para aplicação como fontes radioativas em braquiterapia Evaluation of the biodegradation of porous hydroxyapatite matrices for application as radioactive sources in brachytherapy
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Kássio André Lacerda, Fernando Soares Lameiras, and Viviane Viana Silva
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hydroxyapatite ,biodegradation ,brachytherapy ,Chemistry ,QD1-999 - Abstract
Porous ceramic materials based on calcium phosphate compounds (CPC) have been studied aiming at different biomedical applications such as implants, drug delivery systems and radioactive sources for brachytherapy. Two kinds of hydroxyapatite (HAp) powders and their ceramic bodies were characterized by a combination of different techniques (XRF, BET method, SEM, ICP/AES and neutron activation analysis - NAA) to evaluate their physico-chemical and microstructural characteristics in terms of chemical composition, segregated phases, microstructure, porosity, chemical and thermal stability, biodegradation and incorporation of substances in their structures. The results revealed that these systems presented potential for use as porous biodegradable radioactive sources able to be loaded with a wide range of radionuclides for cancer treatment by the brachytherapy technique.
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- 2009
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26. Psychological repercussions related to brachytherapy treatment in women with gynecological cancer: analysis of production from 1987 to 2007 Repercusiones psicológicas relacionadas al tratamiento de braquiterapia en mujeres con cáncer ginecológico: un análisis de la producción de 1987 a 2007 Repercussões psicológicas relacionadas ao tratamento de braquiterapia em mulheres com câncer ginecológico: análise da produção de 1987 a 2007
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Gisele Curi de Barros and Renata Curi Labate
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braquiterapia ,psicología ,literatura de revisión como asunto ,psicologia ,literatura de revisão como assunto ,brachytherapy ,psychology ,review literature as topic ,Nursing ,RT1-120 - Abstract
One of the radiotherapeutic modalities for gynecological cancer treatment is brachytherapy, characterized by the placement of radioactive materials near the tumor. This treatment can bring side effects for patients. Due to the emotional issues involved, the objective of this research was to apprehend studies about psychological repercussions related to brachytherapy treatment in women with gynecological cancer, through a literature review. The results revealed an embryionic production, with only one study produced in Brazil. A higher concentration of studies was found in the Nursing area. Research focused on psychosocial repercussions, attempting to understand the patients' experiences before, during and after treatment, evidencing physical and psychological consequences that affect their quality of life. It is important to consider the expansion of this production through psychological research that furthers the comprehension about the experience of women submitted to brachytherapy.Una de las modalidades de radioterapia para el tratamiento del cáncer ginecológico es la braquiterapia, caracterizada por la colocación de materiales radioactivos junto al tumor. Esta terapéutica puede traer efectos colaterales a los pacientes. Pensando en las cuestiones emocionales, este trabajo tuvo como objetivo, a través de la revisión de la literatura, revisar los estudios que se refiriesen a las repercusiones psicológicas relacionadas al tratamiento de braquiterapia en mujeres con cáncer ginecológico. Los resultados revelaron una producción embrionaria, con apenas un trabajo producido en Brasil. Hubo una mayor concentración de estudios en el área de Enfermería. Los trabajos se centraron en las repercusiones psicosociales, buscando comprender la experiencia de las pacientes antes, durante, y después del término de la aplicación del tratamiento, lo que colocó en evidencia consecuencias físicas y psicológicas que afectan la calidad de vida. Es importante pensar en un incremento de esta producción con investigaciones psicológicas que profundicen la comprensión de la vivencia de mujeres sometidas a la braquiterapia.Uma das modalidades radioterápicas para tratamento do câncer ginecológico é a braquiterapia, caracterizada pela colocação de materiais radioativos junto ao tumor. Essa terapêutica pode trazer efeitos colaterais às pacientes. Pensando nas questões emocionais, este trabalho objetivou, através de revisão de literatura, apreender estudos que se referissem a repercussões psicológicas relacionadas ao tratamento de braquiterapia em mulheres com câncer ginecológico. Os resultados revelaram produção embrionária, com apenas um trabalho produzido no Brasil. Houve maior concentração de estudos na área de enfermagem. Os trabalhos centraram-se nas repercussões psicossociais, buscando compreender a experiência das pacientes antes da aplicação, durante essa, e após o término do tratamento, evidenciando conseqüências físicas e psicológicas afetando a qualidade de vida. É importante pensar no incremento dessa produção com pesquisas psicológicas que aprofundem a compreensão da vivência de mulheres submetidas à braquiterapia.
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- 2008
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27. La percepción de las pacientes sometidas a tratamiento de braquiterapia ginecológica
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Sousa, Ianna Mara Borges de, Barbosa, Marluce Sampaio Nobre, Sousa, Haigle Reckziegel de, Medeiros, Felype Hanns Alves de, Tourinho, Erika Ferreira, and Queiroz, Patrícia dos Santos Silva
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Terapêutica ,Brachytherapy ,Therapeutics ,Enfermagem ,Enfermería ,Nursing ,Braquiterapia ,Terapéutica - Abstract
Introduction: Brachytherapy is a type of radiotherapy in which the radioactive source is placed within or near the area to be treated. The insertion may be temporary or permanent. One of the most important characteristics of brachytherapy is that the radiation generated by the source affects only areas very close to the site that will be treated, thus protecting healthy tissues. Objective: To know the meaning of brachytherapy and the painful perception of women with gynecological cancer submitted to this therapy in a Reference Unit in a city in the interior of Maranhão. Methodology: This is an exploratory descriptive research, with a quantitative approach. Results: During the preparation procedures for brachytherapy, during and after the withdrawal of the closure of the procedure, it was noticed that the findings in relation to pain perception remained the same as burning, burning colic and constant pain. Even with its significant benefits, this treatment also presents adverse effects that may be irreversible if it is not properly maintained, so it is extremely important to understand the weaknesses and fears presented by patients regarding the disease and treatment, helping to adapt to this new condition and answer doubts, more efficient and appropriate assistance. Conclusions: Finally, it is concluded that it is necessary to expand the investigation of the sociodemographic and clinical profile through a quantitative study, only in this way will it be possible to establish a broader overview of the women assisted in a Reference Unit. Introducción: La braquiterapia es un tipo de radioterapia en la que la fuente radiactiva se coloca dentro o cerca del área a tratar. La inserción puede ser temporal o permanente. Una de las características más importantes de la braquiterapia es que la radiación generada por la fuente afecta solo a áreas muy cercanas al sitio que será tratado, protegiendo así los tejidos sanos. Objetivo: Conocer el significado de la braquiterapia y la percepción dolorosa de las mujeres con cáncer ginecológico sometidas a esta terapia en una Unidad de Referencia en una ciudad del interior de Maranhão. Metodología: Se trata de una investigación descriptiva exploratoria, con enfoque cuantitativo. Resultados: Durante los procedimientos de preparación para la braquiterapia, durante y después de la retirada del cierre del procedimiento, se observó que los hallazgos en relación con la percepción del dolor permanecieron iguales que el ardor, el cólico ardiente y el dolor constante. Aun con sus importantes beneficios, este tratamiento también presenta efectos adversos que pueden ser irreversibles si no se mantiene adecuadamente, por lo que es sumamente importante comprender las debilidades y temores que presentan los pacientes respecto a la enfermedad y el tratamiento, ayudando a adaptarse a esta nueva condición y responder dudas, asistencia más eficiente y adecuada. Conclusiones: Finalmente, se concluye que es necesario ampliar la investigación del perfil sociodemográfico y clínico a través de un estudio cuantitativo, solo así será posible establecer una visión más amplia de las mujeres asistidas en una Unidad de Referencia. Introdução: A braquiterapia é um tipo de radioterapia em que a fonte radioativa é colocada dentro da área a ser tratada ou junto a ela. A inserção pode ser temporária ou permanente. Uma das características mais importantes da braquiterapia é que a radiação gerada pela fonte afeta apenas áreas muito próximas do local que será tratado, protegendo assim os tecidos sadios. Objetivo: Conhecer o significado da braquiterapia e a percepção dolorosa de mulheres com câncer ginecológico submetidas à essa terapêutica numa Unidade de Referência em uma cidade do interior do Maranhão. Metodologia: Trata-se de uma pesquisa descritiva exploratória, com abordagem quantitativa. Resultados: Durante os procedimentos de preparo para a braquiterapia, no decorrer e depois da retirada do encerramento do procedimento percebeu-se que os achados em relação a percepção de dor permaneceram os mesmos como ardência, cólica queimação e dor constante. Mesmo com seus benefícios significativos, esse tratamento também apresenta efeitos adversos que podem chegar a ser irreversíveis caso não seja manejado de forma adequada, assim torna-se de extrema importância compreender as fragilidades e os medos apresentados pelas pacientes no que concerne à doença e ao tratamento, auxiliando na adaptação a essa nova condição e sanar as dúvidas, objetivando uma assistência mais eficiente e adequada. Conclusões: Por fim, conclui-se que é necessária uma ampliação da investigação do perfil sociodemográfico e clínico por meio de estudo quantitativo, somente assim será possível estabelecer um panorama mais amplo sobre as mulheres atendidas numa Unidade de Referência.
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- 2021
28. Disfunciones del suelo pélvico posteriores a la radiación para el tratamiento del cáncer de cuello uterino: una revisión integradora
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Lima, Laís Cabral de, Silva, Thaynan Santos da, Negreiros, Amanda Santos Vidal de, Vieira, Ana Carolina Queiroz, Lima, Samuel Cabral de, Uchôa, Silvana Maria de Macêdo, Uchôa, Érica Patrícia Borba Lira, and Carvalho, Valéria Conceição Passos de
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Disorders ,Pelvic diaphragm ,Teleterapia ,Brachytherapy ,Cérvix ,Teletherapy ,Colo do útero ,Cervix ,Distúrbios ,Braquiterapia ,Diafragma pélvico ,Transtornos - Abstract
Objective: To verify the literature on pelvic floor disorders caused by radiotherapy after the treatment of cervical cancer. Methods: An integrative literature review, in which bibliographies published in Pubmed, Scielo, Portal Capes, Lilacs, Cochrane, PEDro and Medline databases were checked, from 2010 to 2021. The keywords used were “dysfunctions”, “pelvic floor”, “radiotherapy” and “neoplasms of the cervix” and their correlates in English and Spanish. Results: At the end of the analysis, seven studies were included for meeting the research criteria, in which it was found that the most reported pelvic dysfunctions in the literature after radiotherapy for the treatment of cervical cancer are dyspareunia and urinary incontinence. Final considerations: It was possible to infer that this type of intervention has numerous impacts on the pelvic floor, especially urinary incontinence and dyspareunia. It suggests the broader insertion of recovery activities through physiotherapy for changes resulting from this type of treatment, aiming at improving the functionality of the pelvic floor muscles and reducing pelvic changes, which bring complications to physical and psychological well-being of this population. Objetivo: Verificar la literatura sobre las alteraciones del suelo pélvico provocadas por la radioterapia tras el tratamiento del cáncer de cuello uterino. Métodos: Revisión integrativa de la literatura, en la que se revisaron las bibliografías publicadas en las bases de datos Pubmed, Scielo, Portal Capes, Lilacs, Cochrane, PEDro y Medline, de 2010 a 2021. Las palabras clave utilizadas fueron “disfunciones”, “suelo pélvico”, “radioterapia”. ”Y“ neoplasias del cuello uterino ”y sus correlatos en inglés y español. Resultados: Al final del análisis, se incluyeron siete estudios por cumplir con los criterios de investigación, en los cuales se encontró que las disfunciones pélvicas más reportadas en la literatura después de la radioterapia para el tratamiento del cáncer de cuello uterino son la dispareunia y la incontinencia urinaria. Consideraciones finales: Se pudo inferir que este tipo de intervención tiene numerosos impactos en el suelo pélvico, especialmente la incontinencia urinaria y la dispareunia. Sugiere la inserción más amplia de actividades de recuperación a través de la fisioterapia para los cambios resultantes de este tipo de tratamiento, con el objetivo de mejorar la funcionalidad de la musculatura del suelo pélvico y reducir los cambios pélvicos, que traen complicaciones al bienestar físico y psicológico de esta población. Objetivo: Verificar a literatura acerca das disfunções do assoalho pélvico promovidas pela radioterapia após o tratamento de carcinoma de colo uterino. Métodos: Revisão integrativa da literatura, na qual foi feita uma verificação de bibliografias publicadas nas bases de dados Pubmed, Scielo, Portal Capes, Lilacs, Cochrane, PEDro e Medline, no período de 2010 a 2021. As palavras-chave utilizadas foram “disfunções”, “assoalho pélvico”, “radioterapia” e “neoplasias do colo do útero” e suas correlatas na língua inglesa e espanhola. Resultados: No final da análise, sete estudos foram incluídos por se adequarem aos critérios da pesquisa, em que foi verificado que as disfunções pélvicas mais relatadas na literatura após a radioterapia para tratamento de câncer de colo de útero são a dispareunia e a incontinência urinária. Considerações finais: Foi possível inferir que esse tipo de intervenção traz inúmeros impactos para o assoalho pélvico, com destaque para a incontinência urinária e a dispareunia. Sugere- a inserção de forma mais ampla de atividades de recuperação através da fisioterapia para as alterações decorrentes desse tipo de tratamento, visando a melhora da funcionalidade dos músculos do assoalho pélvico e redução das alterações pélvicas, que trazem complicações no bem-estar físico e psicológico dessa população.
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- 2021
29. Disfunção sexual em pacientes com câncer do colo uterino avançado submetidas à radioterapia exclusiva Sexual dysfunction in patients with advanced cervical cancer submitted to exclusive radiotherapy
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Bebiana Calisto Bernardo, Felipe Rinald Barbosa Lorenzato, José Natal Figueiroa, and Pedro Makumbundu Kitoko
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Disfunções sexuais psicogênicas ,Neoplasias do colo do útero ,Braquiterapia ,Qualidade de vida ,Questionários ,Sexual dysfunctions, psychological ,Uterine cervical neoplasms ,Brachytherapy ,Quality of life ,Questionaires ,Gynecology and obstetrics ,RG1-991 - Abstract
OBJETIVO: identificar disfunções sexuais em pacientes com câncer de colo uterino submetidas à radioterapia exclusiva pela técnica de braquiterapia de alta taxa de dose. MÉTODOS: foi realizado um estudo descritivo do tipo corte transversal no período de janeiro a junho de 2004. O estudo envolveu 71 pacientes selecionadas de acordo o perfil estabelecido e que vinham sendo seguidas no ambulatório de pélvis do Hospital do Câncer de Pernambuco. Os dados foram coletados a partir de um questionário estruturado, complementado por um exame ginecológico visando investigar queixas de disfunção sexual após a radioterapia. Foi utilizado o programa estatístico Epi-Info 6.04 para processamento e análise dos dados. A análise descritiva foi feita pela média, mediana, valores máximo e mínimo. Para análise bivariada foram realizados os testes de homogeneidade marginal e McNemar, considerando um nível de significância de 5%. RESULTADOS: das complicações ginecológicas identificadas, destacam-se fibrose, estenose e atrofia vaginais (98,6, 76,1 e 71,8% dos casos, respectivamente). As disfunções sexuais identificadas foram: frigidez e falta de lubrificação, de excitação e de orgasmo, que ocorreram em 76,1% dos casos, falta de libido em 40,8% e vaginismo em 5,6% dos casos. CONCLUSÕES: as disfunções sexuais são freqüentes em pacientes com câncer do colo uterino avançado tratadas com radioterapia exclusiva utilizando o protocolo de braquiterapia de alta taxa de dose. Atenção específica deve ser dada à anamnese sexual e ao exame ginecológico durante o acompanhamento destas pacientes.PURPOSE: to identify sexual dysfunctions in patients with cancer of the uterine cervix submitted to exclusive radiotherapy, using the high dose rate (HDR) brachytherapy technique. METHODS: a descriptive transversal study from January to June of 2004. The study involved 71 selected patients who had been followed in the pelvis outpatient clinic from the Hospital do Câncer de Pernambuco and selected according to the established profile. Data were collected from a structured questionnaire, complemented by a gynecological exam aimed at investigating complaints of sexual dysfunction after the radiotherapy. Epi-Info 6.04 was the statistical program used to process and analyze the data. Descriptive analysis was done through the mean, median and range. Bivariate analysis was done through the Marginal Homogeneity and McNamara's tests, considering 5% as the level of significance. RESULTS: among the gynecological complications identified, we can highlight fibrosis, stenosis and vaginal atrophy (98.6%, 76.1% and 71.8%, respectively). The sexual dysfunctions identified were: frigidity, lack of lubrication, excitation and orgasm in 76.1% of the cases, lack of sex drive in 40.8% and vaginism in 5.6% of the cases. CONCLUSIONS: sexual dysfunctions are frequent in patients with cancer of the advanced uterine cervix treated with exclusive radiotherapy using the protocol of HDR. Specific attention should be given to the sexual anamnesis and the gynecological exam during these patients' attendance.
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- 2007
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30. Aplicabilidade de um Protótipo para Determinação da Dose Absorvida Utilizando Equipamentos de Braquiterapia com Fontes de 192Ir
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Vivianne L. B. Souza, Rízia K. Nascimento, Cássia K. L. Fonseca, Suzana O. Santos, and Waldecy A. Silva
- Subjects
brachytherapy ,dosimeter ,quality control ,Science - Abstract
In the intention to have a "body of evidence" that can be used in quality control (QA) of hospitals and clinics that provide services for the treatment of patients with malignancies sources Ir - 192 (brachytherapy with high rates of dose) a system with Fricke dosimetry was developed by researchers at the Centro Regional de Ciências Nucleares (CRCN) and is being used in public and private institutions of laboratories throughout the Northeast and Southeast Brazilian, where they are irradiated samples in triplicate with a dose of 150 or 300 cGy over a distance of 2.5 cm from the source. This work aims at the development and improvement of a device to perform the absolute dosimetry of Ir - 192 sources using the Fricke solution contained in a flask. The Fricke solution used was prepared using amounts of ferrous ammonium sulfate, sodium chloride and sulfuric acid diluted in distilled water three pre-established in the literature. The spectrophotometer used was a UV-VIS spectrophotometer (Beckman DU-640 Couter) for measuring the optical density at wavelength 304 nm. The calculation for determining the radial dose takes into account the radial distance and the angle formed with the transverse axis of the source. Could be seen by the obtained results that the states of Pernambuco, Ceará, Paraíba and Piauí are in accordance with the recommendations of international standards of the International Atomic Energy Agency (IAEA), which considers not acceptable a difference greater than 5% of prescribed dose and measured dose.
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- 2015
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31. Radiolesão vascular como efeito deletério da braquiterapia intra-arterial com dose elevada de Samário-153 em coelhos hipercolesterolêmicos Vascular radiolesion as a deleterious effect of high-dose-rate intraarterial brachytherapy with Samarium-153 in hypercholesterolemic rabbits
- Author
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Dalton Bertolim Précoma, Lúcia Noronha, Álvaro Vieira Moura, Airton Seiji Yamada, José Knopfholz, César Lopes Dusilek, Rita Perussolo, Paulo Roberto Slud Brofman, Márcia Olandoski, and José Cláudio Meneghetti
- Subjects
Lesão arterial ,braquiterapia ,samário-153 ,Artery injury ,brachytherapy ,samarium-153 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
OBJETIVO: Este estudo tem por objetivo avaliar as alterações vasculares morfológicas e morfométricas induzidas pela braquiterapia com Samário-153 (153 Sm) em coelhos hipercolesterolêmicos, com doses elevadas. MÉTODOS: Foram analisados 43 coelhos hipercolesterolêmicos, brancos, da raça New Zealand, e o total de 86 artérias ilíacas submetidas a lesão por balão de angioplastia. Divididos em três grupos: dois (GI) irradiados com as doses de 15Gy (n=14) e 60Gy (n=36) e um grupo controle (n=36). Foram realizadas avaliação histológica morfométrica e análise histológica qualitativa para análise tecidual. RESULTADOS: Foram observadas uma redução significativa da neoproliferação intimal (NPI) no GI 15 Gy (pOBJECTIVE: This study was designed to evaluate vascular morphological and morphometric changes induced by brachytherapy with samarium-153 (Sm-153) at high doses in hypercholesterolemic rabbits. METHODS: Forty-three New Zealand White hypercholesterolemic rabbits were analyzed, and the total of 86 iliac arteries underwent balloon angioplasty injury. The rabbits were divided into three different groups: two irradiation groups (IG) assigned to 15 Gy (n=14) and 60 Gy (n=36) irradiation doses, respectively, and a control group (n = 36). Histomorphometric and qualitative histological analyses were performed for tissue evaluation. RESULTS: Significant reductions were found in neointimal proliferation (NIP) (p< 0.0001), media area (MA) (p
- Published
- 2006
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32. PREVENÇÃO DA ESTENOSE VAGINAL PÓS-BRAQUITERAPIA: INTERVENÇÃO DE ENFERMAGEM.
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Pessi, Maira Roberta, Kassulke Feuerchutte, Karin, Martins da Rosa, Luciana, de Almeida Hammerschmidt, Karina Silveira, Radünz, Vera, and Alvarez, Angela Maria
- Abstract
Copyright of Journal of Nursing UFPE / Revista de Enfermagem UFPE is the property of Revista de Enfermagem UFPE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
33. Braquiterapia intracoronariana. Tratamento da reestenose intra-stent com o sistema Beta-Cath: experiência inicial na América Latina Intracoronary brachytherapy. Treatment of in-stent restenosis with the Beta-Cath system: initial experience in Latin America
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Juan Simon Muñoz, Fausto Feres, Alexandre C. Abizaid, Luiz A. Mattos, Rodolfo Staico, Marinella Centemero, Luiz F. Tanajura, Ibraim Pinto, Amanda G.M.R. Sousa, and J. Eduardo Sousa
- Subjects
reestenose intra-stent ,braquiterapia ,sistema Beta-CathTM ,in-stent restenosis ,brachytherapy ,Beta-Cath system ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
OBJETIVO: Avaliar a segurança e eficácia da braquiterapia intracoronariana usando o sistema Beta-CathTM na prevenção da recorrência de restenose intra-stent (RIS), por meio da análise dos resultados clínicos, angiográficos e pelo ultra-som intracoronariano (USIC). MÉTODO: Foram submetidos à angioplastia com cateter-balão, seguida de beta-radiação intracoronariana com o sistema Beta-CathTM (90Sr/Y) 30 pacientes com RIS em artérias coronárias nativas e, posteriormente, avaliados. RESULTADOS: Incluíram-se lesões reestenóticas complexas (77% do tipo difuso-proliferativo) com extensão elevada (18,66±4,15 mm). O sucesso da braquiterapia foi de 100%. A dose média utilizada foi de 20,7±2,3 Gy, liberada em um período médio de 3,8±2,1 min. No seguimento tardio, o diâmetro luminal mínimo (DLM) intra-stent diminuiu discretamente (1,98±0,30mm para 1,84±0,39 aos 6 meses, p=0,13), com uma perda tardia de 0,14±0,18 mm. O DLM intra-segmentar foi significativamente menor do que o intra-stent (1,55±0,40mm vs.1,84±0,39mm, p=0,008), associando-se à perda tardia (0,40±0,29mm vs. 0,14±0,18mm; p=0,0001). No USIC, observou-se discreto incremento do tecido neointimal em 6,8±14,3 mm³ aos 6 meses (p=0,19) e a percentagem de obstrução volumétrica aumentou em 4,7±7,5%. A reestenose binária e a revascularização do vaso-alvo recorreram em 17% dos casos; houve 1 caso (3%) de oclusão tardia, associada a infarto do miocárdio. A sobrevida livre de eventos foi de 80%. CONCLUSÃO: O manejo da reestenose intra-stent com a beta-radiação intracoronariana mostrou-se procedimento seguro e eficaz, com alta taxa de sucesso imediato, representando uma opção terapêutica para a inibição da hiperplasia neointimal.OBJECTIVE: To assess the safety and efficacy of intracoronary brachytherapy using the Beta-Cath systemTM for preventing recurrence of in-stent restenosis (ISR), by analyzing clinical, angiographic, and intracoronary ultrasound (ICUS) results. METHODS: This study assessed 30 patients with ISR in native coronary arteries who underwent balloon catheter angioplasty followed by intracoronary beta radiation with the Beta-Cath systemTM (90Sr/Y). RESULTS: The study comprised complex, extensive (18.66±4.15 mm) restenotic lesions, 77% of which were of the diffuse-proliferative type. Brachytherapy was successful in 100% of the cases. The mean radiation dose used was 20.7±2.3 Gy, released for a mean period of 3.8±2.1 minutes. On late follow-up, the in-stent minimum luminal diameter (MLD) slightly decreased (from 1.98±0.30 mm to 1.84±0.39 mm at 6 months; P=0.13), with a late loss of 0.14±0.18 mm. The intrasegmentary MLD was significantly smaller than the in-stent diameter (1.55±0.40 mm vs 1.84±0.39 mm; P=0.008), and was associated with a more significant late loss (0.40±0.29 mm vs 0.14±0.18 mm; P=0.0001). On ICUS, a mild increase of 6.8±14.3 mm³ in the neointimal tissue was observed at 6 months (P=0.19), and the percentage of volumetric obstruction increased by 4.7±7.5%. Binary restenosis and revascularization of the target vessel recurred in 17% of the cases; late occlusion associated with myocardial infarction occurred in 1 case (3%). Event-free survival was 80%. CONCLUSION: The management of in-stent restenosis with intracoronary beta radiation proved to be a safe and effective procedure, with a high rate of immediate success, representing a therapeutic option for inhibiting neointimal hyperplasia.
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- 2004
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34. LASER PHOTOCOAGULATION FOR I 125 RADIATION-INDUCED RETINOPATHY IN CHOROIDAL MELANOMA: A CASE REPORT
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Miriam García Fernández, Joaquín Castro Navarro, and Purificación Mera Yañez
- Subjects
choroidal melanoma ,brachytherapy ,radiation-induced retinopathy ,Ophthalmology ,RE1-994 - Abstract
A 25 year-old female complaining of visual acuity loss in her left eye (OS). Funduscopic and ultrasound appearance revealed choroidal melanoma in OS. Treatment with plaque brachytherapy using I125 was started. It was observed improvement regarding tumor size and best-corrected visual acuity (BCVA). However, at 39 months following brachytherapy, fundoscopic signs of radiation-induced retinopathy (microaneurysms, retinal hemorrhages, hard exudates, and neovascularization) were observed. Fluorescein angiography confirmed the diagnosis of radiation-induced retinopathy, with extense areas of ischemia and neovascularization. Focal argon photocoagulation was used as treatment with excellent results at 5 years follow-up.
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- 2012
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35. Adherencia a las pautas fisioterapéuticas en la prevención de la estenosis vaginal después de la braquiterapia en el tratamiento del cáncer de cuello uterino
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Nascimento, Kelley Cristian do, Modesto, Felipe Cardozo, Carvalho, Raquel Boechat de Moura, Ferreira, Kamila Rodrigues, Lopes Souza, Patrícia, and Silva, Gustavo Telles da
- Subjects
Estenosis vaginal ,Cumplimiento y Adherencia al Tratamiento ,Brachytherapy ,Estenose vaginal ,Cooperação e Adesão ao tratamento ,Prysical Therapy ,Uterine cervical neoplasms ,Neoplasias del cuello uterino ,Treatment Adherence and Compliance ,Neoplasias do colo do útero ,Vaginal stenosis ,Braquiterapia ,Fisioterapia - Abstract
Introduction: Dilation exercises and sexual intercourse are preventive guidelines and vaginal stenosis. Objective: to evaluate patients' adherence to physiotherapeutic guidelines in the prevention of vaginal stenosis. Methods: retrospective study of medical records of women with cervical cancer who underwent brachytherapy between January and December 2018, and who had a one-year follow-up at the physiotherapy outpatient clinic. Continuous variables were described by mean and standard deviation and categorical variables by percentage frequency. A QCochran test was applied, considering a significance level of p≤ 0.05 to assess variations in 6 months and 1 year. Results: Medical records of 60 women with an avarage age of 49.4 years (± 11.1) were analyzed. In the first evaluation, after brachytherapy, 21 women (35%) performed vaginal dilation exercises, 26 women (43.3%) were sexually active and 13 women (21.7%) already had vaginal stenosis. After one year, 21 women (35%) performed vaginal dilation exercises and 26 women (43.3%) were sexually active. Considering those who performed at least one of the guidelines, 43 women (73.3%) adhered. There was no significant change for these parameters over 6months, or for 1year (p = 0.368). Adherence did not vary significantly for the performance of dilation exercises in the period of 6months and 1year, nor for the practice of sexual intercourse in this period (p = 0.097 and p = 0.368, respectively). Conclusion: There was good adherence by women to follow some type of preventive stenosis guidance and maintenance of the practice of these guidelines over the course of 1year. Introducción: Los ejercicios de dilatación y las relaciones sexuales son pautas de prevención y estenosis vaginal. Objetivo: evaluar la adherencia de las pacientes a las guías fisioterapéuticas en la prevención de la estenosis vaginal. Métodos: estudio retrospectivo de las historias clínicas de mujeres con cáncer de cuello uterino que se sometieron a braquiterapia entre enero y diciembre de 2018, y con un año de seguimiento en la consulta externa de fisioterapia. Las variables continuas se describieron por media y desviación estándar y las categóricas por frecuencia porcentual. Se aplicó una prueba de QCochran, considerando un nivel de significancia de p≤ 0.05, para evaluar variaciones en 6 meses y 1 año. Resultados: Se analizaron las historias clínicas de 60 mujeres con una edad media de 49,4 años (± 11,1). En la primera evaluación después de la braquiterapia, 21 mujeres (35%) realizaron ejercicios de dilatación vaginal, 26 mujeres (43,3%) eran sexualmente activas y 13 mujeres (21,7%) ya tenían estenosis vaginal. Después de un año, 21 mujeres (35%) realizaron ejercicios de dilatación vaginal y 26 mujeres (43,3%) eran sexualmente activas. Considerando las que realizaron al menos una de las guías, 43 mujeres (73,3%) se adhirieron. No hubo cambios significativos para estos parámetros durante 6 meses o durante 1 año (p = 0,368). La adherencia no varió significativamente para la realización de ejercicios de dilatación en este período de 6 meses y 1 año, ni para la práctica de las relaciones sexuales en este período (p = 0,097 yp = 0,368, respectivamente). Conclusión: Hubo una buena adherencia por parte de las mujeres a seguir algún tipo de orientación preventiva para la estenosis y el mantenimiento de la práctica de estas guías en el transcurso de 1 año. Introdução: Exercícios de dilação e a relação sexual são orientações preventivas e estenose vaginal. Objetivo: avaliar a adesão das pacientes às orientações fisioterapêuticas na prevenção da estenose vaginal. Métodos: estudo retrospectivo dos prontuários de mulheres com câncer de colo uterino submetidas a braquiterapia entre janeiro e dezembro de 2018, e com seguimento de um ano no ambulatório da fisioterapia. As variáveis contínuas foram descritas por média e desvio padrão e as variáveis categóricas por frequência percentual. Aplicou-se teste QCochran, considerando um nível de significância p≤ 0,05, para avaliar as variações em 6meses e 1ano. Resultados: Foram analisados prontuários de 60 mulheres com idade média de 49,4 anos (± 11,1). Na primeira avaliação após braquiterapia 21 mulheres (35%) realizaram os exercícios de dilatação vaginal, 26 mulheres (43,3%) eram sexualmente ativas e 13 mulheres (21,7%) apresentavam estenose vaginal. Em1ano, 21 mulheres (35%) realizavam os exercícios de dilatação vaginal e 26 mulheres (43,3%) eram sexualmente ativas. Considerando as que realizavam pelo menos uma das orientações, nota-se a adesão de 43 mulheres (73,3%). Não houve alteração significativa para esses parâmetros ao longo de 6meses, nem para 1ano (p=0,368). A adesão não variou significativamente para realização dos exercícios de dilatação neste período de 6meses e 1ano, nem para prática de relação sexual neste período (p=0,097 e p=0,368, respectivamente). Conclusão: Houve uma boa adesão pelas mulheres em seguir algum tipo de orientação preventiva de estenose e manutenção da prática dessas orientações ao longo de 1ano.
- Published
- 2021
36. Validity study of educational technology on gynecological high dose rate (HDR) brachytherapy.
- Author
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Ximenes ML, Firmeza MA, Rodrigues AB, Aguiar MIF, Souza GL, Serpa GS, and Oliveira PP
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- Humans, Female, Educational Technology methods, Pamphlets, Brachytherapy, Neoplasms
- Abstract
Objective: to construct and validate an educational booklet on high dose rate gynecological brachytherapy (HDR) for women with gynecologic cancer., Methods: a methodological study, with the construction and validity of a booklet based on the Doak, Doak and Root theoretical-methodological framework. Content and appearance validity was guided by the Delphi technique, by 11 judges, selected using Jasper's criteria. Afterwards, clinical validity was carried out with the target population., Results: the booklet, built from evidence from an integrative review, validated with judges, obtained an overall CVI of 0.98. After clinical validity with 27 women, it presents 24 sheets with illustrations produced by a graphic designer, subdivided into topics: gynecological system anatomy and gynecological cancer epidemiology, gynecological brachytherapy definition, therapeutic steps, approach to side effects and management, and two pages for notes., Conclusions: the booklet has validity for use in HDR gynecological brachytherapy treatment.
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- 2023
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37. Processo de recuperação físico-emocional no pós-câncer ginecológico.
- Author
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Machado Toriy, Ariana, Alves Pires, Shaiane, Zomkowski, Kamilla, Medeiros da Luz, Clarissa, Krawulski, Edite, and Flores Sperandio, Fabiana
- Abstract
Copyright of Cadernos de Terapia Ocupacional da UFSCar is the property of Cadernos de Terapia Ocupacional da UFSCar and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
38. Self-care practices and immediate side effects in women with gynecological cancer in brachytherapy
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Silva, Rosimeri Helena da, Rosa, Luciana Martins da, Dias, Mirella, Salum, Nádia Chiodelli, Varela, Ana Inêz Severo, and Radünz, Vera
- Subjects
Oncologia ,Brachytherapy ,Câncer ginecológico ,Neoplasms of the female genitals ,RT1-120 ,Enfermagem ,Nursing ,oncologia ,câncer ginecológico ,Oncology ,braquiterapia ,Medicine ,Personal narrative ,enfermagem ,Braquiterapia - Abstract
Objective: to reveal the immediate side effects and self-care practices adopted by women with gynecological cancer submitted to brachytherapy. Method: narrative research, conducted with 12 women, in southern Brazil, between December/2018 and January/2019, including semi-structured interviews submitted to content analysis. Results: three thematic categories emerged from the analysis: Care oriented and adopted by women in pelvic brachytherapy; Immediate side effects perceived by women in pelvic brachytherapy; Care not guided by health professionals. The care provided by the nurses most reported by the women was vaginal dilation, use of a shower and vaginal lubricant, tea consumption, cleaning, and storage of the vaginal dilator. The side effects most frequently mentioned in the interviews were urinary and intestinal changes in the skin and mucous membranes. Conclusion: nursing care in brachytherapy must prioritize care to prevent and control genitourinary and cutaneous changes, including self-care practices. Objetivo: revelar os efeitos colaterais imediatos e as práticas de autocuidado adotadas por mulheres com câncer ginecológico submetidas à braquiterapia. Método: pesquisa narrativa, realizada com 12 mulheres, no Sul do Brasil, entre dezembro/2018 e janeiro/2019, incluindo entrevista semiestruturada submetida à análise de conteúdo. Resultados: da análise emergiram três categorias temáticas: Cuidados orientados e adotados pelas mulheres em braquiterapia pélvica; Efeitos colaterais imediatos percebidos pelas mulheres em braquiterapia pélvica; Cuidados não orientados pelos profissionais da saúde. Os cuidados orientados pelas enfermeiras mais relatados pelas mulheres foram dilatação vaginal, uso de ducha e lubrificante vaginal, consumo de chá, higienização e guarda do dilatador vaginal. Os efeitos colaterais mais citados nas entrevistas foram alterações urinárias e intestinais na pele e mucosas. Conclusão: evidencia-se que a atenção de enfermagem em braquiterapia deve priorizar cuidados para prevenir e controlar as alterações geniturinárias e tegumentares, incluindo práticas de autocuidado.
- Published
- 2021
39. Sistema computacional para dosimetria de nêutrons e fótons baseado em métodos estocásticos aplicado a radioterapia e radiologia.
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Trindade, Bruno Machado and de Campos, Tarcisio Passos Ribeiro
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- *
HOSPITAL radiological services , *PHOTOTHERAPY , *DRUG dosage , *TOMOGRAPHY , *STOCHASTIC processes , *DIAGNOSTIC imaging - Abstract
Objective: The present paper describes a procedure for conversion of computed tomography or magnetic resonance images into a three-dimensional voxel model for dosimetry purposes. Such model is a personalized representation ofthe patient that can be utilized in nuclear particle transport simulations by means of the MCNP (Monte Carlo N-Particle)code, reproducing the stochastic process of nuclear particles interaction with human tissues. Materials and Methods:The developed computational system - SISCODES - is a tool designed for 3D planning of radiotherapy or radiological procedures. Based on tomographic images of the patient, the treatment plan is modeled and simulated. Then, the absorbed doses are shown by means of isodose curves superimposed on the model. The SISCODES couples the three dimensional model with the MCNP5 code, simulating the protocol of exposure to ionizing radiation. Results: The SISCODES has been utilized by the NRI/CNPq in the creation of anthropomorphic and anthropometric voxel models which are coupled with the MCNP code for modeling brachytherapy and teletherapy applied to lung, pelvis, spine, head and neck tumors, among others. The current SISCODES modules are presented together with examples of cases of radiotherapy planning. Conclusion: The SISCODES provides a fast method to create personalized voxel models of any patient which can be used in stochastic simulations. The combination of the MCNP simulation with a personalized model of the patient increases the dosimetry accuracy in radiotherapy. [ABSTRACT FROM AUTHOR]
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- 2011
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40. Tratamento radioterápico adjuvante nos sarcomas de extremidades de alto grau.
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da Silva Franca, Carlos Antônio, Marques, Felipe José Cordeiro Queiroz, Carvalho, Antonio Carlos Pires, Penna, Antonio Belmiro Rodrigues Campbell, and Vieira, Sérgio Lannes
- Subjects
- *
SARCOMA , *RADIOTHERAPY , *RADIOISOTOPE brachytherapy , *DRUG therapy , *SURGERY - Abstract
OBJECTIVE: To evaluate the therapies utilized in the authors' institution for management of high-grade extremity sarcomas, analyzing the overall survival rates following multidisciplinary treatment. MATERIALS AND METHODS: Retrospective study developed in the period from 1993 to 2007 with 36 patients diagnosed with stages IIb/III, submitted to postoperative external beam radiotherapy, with or without boost dose, utilizing high-dose brachytherapy. RESULTS: Thirty-six patients underwent surgery followed by adjuvant external beam radiation therapy. Four patients (11%) received boost dose with brachytherapy, and seven (19%) received chemotherapy. The average dose for radiotherapy was 50 Gy (CI 95%: 47-53 Gy), and the four patients with brachytherapy boost received doses ranging from 16.2 to 35 Gy. Chemotherapy was indicated for seven patients (19%) with positive margins. Fifteen patients (42%) presented local or distant recurrence, and all of them progressed to death. Twenty-one patients (58%) remain with no clinical/radiological evidence of local/distant recurrence. The mean follow-up time was 88 months (IC 95%: 74-102). The overall seven-year survival rate was 80%. CONCLUSION: Combined surgery and radiotherapy is an effective treatment with excellent outcomes in cases where brachytherapy is associated, with improved overall survival rates. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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41. Avaliação da dose no reto em pacientes submetidas a braquiterapia de alta taxa de dose para o tratamento do câncer do colo uterino.
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de Oliveira, Jetro Pereira, da Rosa, Luiz Antonio Ribeiro, Batista, Delano Valdivino Santos, Bardella, Lúcia Helena, and Carvalho, Arnaldo Rangel
- Subjects
- *
RADIOISOTOPE brachytherapy , *CERVICAL cancer treatment , *RADIOTHERAPY , *RADIATION doses , *CANCER patients , *RADIOGRAPHY , *MEDICAL radiography , *DIAGNOSTIC imaging , *MEDICAL research - Abstract
OBJECTIVE: The present study was aimed at developing a thermoluminescent dosimetric system capable of assessing the doses delivered to the rectum of patients submitted to high-dose-rate brachytherapy for uterine cervix cancer. MATERIALS AND METHODS: LiF:Mg,Ti,Na powder was the thermoluminescent material utilized for evaluating the rectal dose. The powder was divided into small portions (34 mg) which were accommodated in a capillary tube. This tube was placed into a rectal probe that was introduced into the patient's rectum. RESULTS: The doses delivered to the rectum of six patients submitted to high-dose-rate brachytherapy for uterine cervix cancer evaluated by means of thermoluminescent dosimeters presented a good agreement with the planned values based on two orthogonal (anteroposterior and lateral) radiographic images of the patients. CONCLUSION: The thermoluminescent dosimetric system developed in the present study is simple and easy to be utilized as compared to other rectal dosimetry methods. The system has shown to be effective in the evaluation of rectal doses in patients submitted to high-dose-rate brachytherapy for uterine cervix cancer. [ABSTRACT FROM AUTHOR]
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- 2009
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42. Considerações radiodosimétricas da braquiterapia ocular com iodo 125 e rutênio/ródio 106.
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Mourão, Arnaldo Prata and de Campos, Tarcísio Passos Ribeiro
- Subjects
- *
MEDICAL research , *TUMOR treatment , *IRRADIATION , *IODINE isotopes , *RUTHENIUM , *RHODIUM , *SCLERA , *MONTE Carlo method , *PHOTONS , *CRYSTALLINE lens - Abstract
OBJECTIVE: To analyze dose distribution utilizing plaques with iodine-125 and ruthenium/rhodium-106 in a computational model of the ocular region. MATERIALS AND METHODS: A voxel-based computational model including the different tissues of the ocular region was utilized with the plaque positioned on the sclera. The Monte Carlo code was utilized for simulating irradiation. The dose distribution is demonstrated by isodoses curves. RESULTS: Computational simulations demonstrate the dose distribution inside the ocular bulb as well as in adjacent outside structures. The results have allowed the authors to compare the spatial distribution of doses generated by beta particles and photons. The simulations demonstrated that the utilization of iodine-125 seeds implies a high dose to the crystalline lens, while ruthenium/rhodium-106 results in high dose on the sclera surface. CONCLUSION: The dose to the crystalline lens depends on the tumor position and thickness, the plaque diameter, and the radionuclide utilized. In the present study, the ruthenium/rhodium-106 source is recommended for low tumor thickness. Irradiation with iodine-125 results in higher doses to the crystalline lens than irradiation with ruthenium/rhodium-106. The maximum value for dose to the crystalline lens corresponds to 12.75% of the maximum dose with iodine-125 and only 0.005% for ruthenium/rhodium-106. [ABSTRACT FROM AUTHOR]
- Published
- 2009
43. Vivências de muiheres submetidas à braquiterapia: compreensäo existencial.
- Author
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Rosa, Maria Tereza Scramin and Sales, Catarina Aparecida
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CANCER treatment ,RADIOISOTOPE brachytherapy ,CANCER patients ,HOSPITAL radiological services ,ANXIETY ,RELIGIOUSNESS ,PHILOSOPHERS - Abstract
Copyright of Revista Eletrônica de Enfermagem is the property of Revista Eletronica de Enfermagem and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2008
- Full Text
- View/download PDF
44. Braquiterapia endobrônquica de alta taxa de dose como tratamento paliativo: artigo de revisão
- Author
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Perdigão, Maria and Henriques, Dina
- Subjects
Palliative treatment ,Brachytherapy ,Neo-plasm metastasis ,Lung neoplasm - Abstract
Submitted by Lurdes Grilo (lurdesgrilo@ipcb.pt) on 2020-06-08T12:37:47Z No. of bitstreams: 1 01_Braquiterapia_Endobronquica_de_Alta_Taxa_de_Dose como_Tratamento_Paliativo.pdf: 7375495 bytes, checksum: b527a373fcb2ce0aa678f28582b6c4ea (MD5) Approved for entry into archive by Lurdes Grilo (lurdesgrilo@ipcb.pt) on 2020-06-08T12:38:20Z (GMT) No. of bitstreams: 1 01_Braquiterapia_Endobronquica_de_Alta_Taxa_de_Dose como_Tratamento_Paliativo.pdf: 7375495 bytes, checksum: b527a373fcb2ce0aa678f28582b6c4ea (MD5) Made available in DSpace on 2020-06-08T12:38:46Z (GMT). No. of bitstreams: 1 01_Braquiterapia_Endobronquica_de_Alta_Taxa_de_Dose como_Tratamento_Paliativo.pdf: 7375495 bytes, checksum: b527a373fcb2ce0aa678f28582b6c4ea (MD5) Previous issue date: 2020 info:eu-repo/semantics/publishedVersion
- Published
- 2020
45. Avaliação das necessidades da braquiterapia contemporânea e os desafios de implementação do paradigma : cuidados de radioterapia baseados no valor
- Author
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Marques, Luís Manuel Lopes, Poli, Maria Esmeralda Ramos, Ferreira, Pedro Miguel Martins, and Ferreira, Pedro Miguel
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Braquiterapia intracavitária ,Brachytherapy resource ,Recursos em saúde ,Brachytherapy ,Cost analysis ,Brquiterapia ,Health resources ,Análise de custos ,Braquiterapia ,Recursos em braquiterapia ,Intracavitary brachytherapy ,Análise de custo - Abstract
Mestrado em Engenharia Biomédica Submitted by Maria da Luz Antunes (mluz.antunes@estesl.ipl.pt) on 2021-05-05T10:52:58Z No. of bitstreams: 1 Avaliação das necessidades da braquiterapia contemporânea e os desafios de implementação do paradigma_cuidados de radioterapia baseados no valor.pdf: 2692277 bytes, checksum: aabefb6239d9767663056fb822bcdae7 (MD5) Made available in DSpace on 2021-05-05T10:52:58Z (GMT). No. of bitstreams: 1 Avaliação das necessidades da braquiterapia contemporânea e os desafios de implementação do paradigma_cuidados de radioterapia baseados no valor.pdf: 2692277 bytes, checksum: aabefb6239d9767663056fb822bcdae7 (MD5) Previous issue date: 2019-09 N/A
- Published
- 2019
46. Shielding calculations for orthovoltagem room applied in radiotherapy veterinary
- Author
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Carvalho, Marina de [UNESP], Universidade Estadual Paulista (Unesp), and Fernandes, Marco Antônio Rodrigues [UNESP]
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veterinary medicine ,braquiterapia ,animais selvagens ,medicina veterinária ,wild animals ,brachytherapy ,orthovoltage ,ortovoltagem ,shielding calculation ,radiation protection ,radiotherapy ,cálculo de blindagem - Abstract
Submitted by Marina de Carvalho (macarv08@hotmail.com) on 2019-10-15T17:17:29Z No. of bitstreams: 1 Dissertação Final 1510.pdf: 752790 bytes, checksum: 1daa88ac4961e14146bd45fba9f6ab18 (MD5) Approved for entry into archive by ROSANGELA APARECIDA LOBO null (rosangelalobo@btu.unesp.br) on 2019-10-15T19:33:10Z (GMT) No. of bitstreams: 1 carvalho_m_me_bot.pdf: 752790 bytes, checksum: 1daa88ac4961e14146bd45fba9f6ab18 (MD5) Made available in DSpace on 2019-10-15T19:33:10Z (GMT). No. of bitstreams: 1 carvalho_m_me_bot.pdf: 752790 bytes, checksum: 1daa88ac4961e14146bd45fba9f6ab18 (MD5) Previous issue date: 2019-09-19 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O uso de fontes de radiações ionizantes tem sido cada vez mais presente nas diversas atividades técnico-científicas. Os cuidados e os benefícios da prática já são bastante conhecidos e difundidos na área da medicina de humanos, tanto no campo do diagnóstico quanto da terapia. Na área da medicina veterinária, a radioterapia vem ganhando espaço, no entanto, o uso de feixes de radiações ionizantes exige o conhecimento de legislações específicas sobre proteção radiológica e a atuação de profissionais altamente especializados. O uso seguro das práticas de radioterapia requer o dimensionamento de blindagens para a correta proteção dos profissionais, dos pacientes e do meio ambiente. Neste trabalho foram realizados cálculos de blindagem para dimensionamento das espessuras das barreiras de proteção à radiação para uma sala de radioterapia adequada para o uso de um equipamento de teleterapia de ortovoltagem, destinado para procedimentos de radioterapia em medicina veterinária. Foram também realizados estudos para o dimensionamento das mesmas barreiras e condições de trabalho para o uso em braquiterapia de alta e de baixa taxa de dose (BATD e BBTD), para diferentes fontes radioativas. Foram ainda desenvolvidos os cálculos para dimensionamento das paredes de um espaço localizado no interior do canil situado no prédio da Faculdade de Medicina Veterinária e Zootecnia da Unesp de Botucatu (FMVZ), visando sua adequação para a realização de procedimentos de braquiterapia de baixa de dose. Os resultados mostraram que as espessuras calculadas para as paredes da sala de radioterapia de ortovoltagem, são suficientes para a blindagem das radiações oriundas das fontes de BATD e BBTD. The use of ionizing radiation surces has increased in various technical-scientific activities. The care and benefits of the practice are already well known and widespread in human medicine, both in the field of diagnosis and therapy. In the area of veterinary medicine, radiotherapy has been gaining space, however, the use of ionizing radiation beams requires the knowledge of specific legislation on radiolprotection and specialized professionals. The safe use of radiotherapy practices requires the design of shielding for the correct protection of professionals, patients and the environment. The present study calculated the dimension and thickness of the radiation protection barriers to a radiotherapy room suitable for the use of orthovoltage teletherapy equipment, destined for radiotherapy procedures in veterinary medicine. Studies were also carried out for the design of the same barriers and working conditions for use in high and low dose rate brachytherapy (HDR and LDR) for different radioactive sources. The calculations for dimensioning the walls of a dog kennel located in the school of Veterinary Medicine and Animal Science, Unesp Botucatu (FMVZ), were also developed, aiming at their adequacy for the accomplishment of dose rate brachytherapy procedures. The results showed that the thicknesses calculated for the walls of the orthovoltage radiotherapy room are sufficient for the shielding of the radiations from the sources of high and low dose rate brachytherapy. CAPES: 001
- Published
- 2019
47. Post-surgical radiotherapy in keloids. A meta-analysis and literature review
- Author
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Oliveira, Ana Laura Paludetto, Universidade Estadual Paulista (Unesp), and Fernandes, Marco Antonio Rodrigues [UNESP]
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Radioterapia ,Radiotherapy ,Keloid ,Queloides ,Brachytherapy ,Elétrons ,Electrons ,Dermatology ,Relapse ,Braquiterapia ,Dermatologia ,Recidiva - Abstract
Submitted by Ana Laura Paludetto De Oliveira (ana_paludetto@hotmail.com) on 2019-07-16T23:57:13Z No. of bitstreams: 1 Dissertaçao Ana Laura.docx: 3390232 bytes, checksum: 2e4f1a8e4ab5ad68612d72f04699e6b7 (MD5) Rejected by Luciana Pizzani null (luciana@btu.unesp.br), reason: Bom dia, Ana Laura! Solicitamos que realize uma nova submissão seguindo as orientações abaixo: problema 1: o arquivo submetido deve, obrigatoriamente, estar em formato PDF. Seu arquivo está em word. Assim que tiver efetuado essa correção submeta o arquivo, em PDF, novamente. Agradecemos a compreensão. on 2019-07-17T13:59:18Z (GMT) Submitted by Ana Laura Paludetto De Oliveira (ana_paludetto@hotmail.com) on 2019-07-17T14:34:03Z No. of bitstreams: 1 Dissertaçao Ana Laura.pdf: 1424405 bytes, checksum: aa4990bb166df81b7aef02fa174e53ed (MD5) Approved for entry into archive by Luciana Pizzani null (luciana@btu.unesp.br) on 2019-07-18T12:50:52Z (GMT) No. of bitstreams: 1 oliveira_alp_me_bot.pdf: 1424405 bytes, checksum: aa4990bb166df81b7aef02fa174e53ed (MD5) Made available in DSpace on 2019-07-18T12:50:52Z (GMT). No. of bitstreams: 1 oliveira_alp_me_bot.pdf: 1424405 bytes, checksum: aa4990bb166df81b7aef02fa174e53ed (MD5) Previous issue date: 2019-06-27 Um queloide é uma cicatriz elevada, de contornos irregulares, que se estende além das bordas de uma excisão cirúrgica ou trauma de pele por uma formação excessiva de colágeno na derme durante o processo de reparação do tecido conjuntivo. A formação de queloides pode surgir através de falhas nas sequencias regulatórias, nos fatores de crescimento e nas interações queratinócito-fibroblastos, evoluindo com retardo na senescência e apoptose. Terapias adjuvantes à cirurgia de queloides são necessárias em função do alto índice de recidiva. A radioterapia percutânea pós operatória evidencia bons resultados já que os queloides recentes são ricos em fibroblastos, altamente sensíveis à radiação. Neste trabalho foi realizada uma meta-análise, baseada em estudos publicados em artigos científicos, visando verificar os resultados da realização de radioterapia em pacientes portadores de queloides, que foram submetidos à cirurgia para retirada da lesão com subsequente irradiação do leito cicatricial. Os artigos científicos analisados apontaram 1310 pacientes submetidos à radioterapia em cicatrizes queloidianas, em regiões anatômicas diversas, dos quais, o índice de recidiva médio foi de 16,73%. Os estudos concluem que a aplicação da radioterapia após cirurgia de queloide contribui para minimizar os índices de recorrência da lesão, quando comparada com apenas a cirurgia isolada. A keloid is a high scar, irregularly shaped that extends beyond the borders of a surgical excision or skin trauma by excessive formation of collagen in the dermis during the repair process of connective tissue. Keloid formation may arise through regulatory sequence failures, growth factors, and keratinocyte-fibroblast interactions, evolving with delayed senescence and apoptosis. Adjuvant therapies for keloid surgery are necessary because of the high relapse rate. Postoperative percutaneous radiotherapy shows good results since recent keloids are rich in fibroblasts, highly sensitive to radiation. In this work, a meta-analysis was performed, based on studies published in scientific articles, aiming to verify the results of radiotherapy in patients with keloids who submitted surgery to remove the lesion with subsequent cicatricial bed irradiation. The scientific articles analyzed showed 1310 patients submitted to radiotherapy in keloid scars, in different anatomical regions, of which, the average recurrence rate was 16.73%. The studies conclude that the application of radiotherapy after keloid surgery contributes to minimize lesion recurrence rates, when compared with only isolated surgery.
- Published
- 2019
48. Desenvolvimento de vidros bioativos contendo óxido de hólmio e nanopartículas de óxido de ferro sintetizados pelo método sol-gel visando tratamento de câncer por hipertermia e braquiterapia
- Author
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Aspasio, Renata Deliberato, Marchi, Juliana, Fredericci, Catia, and Yoshimura, Humberto Naoyuki
- Subjects
REGENERAÇÃO ÓSSEA ,HIPERTERMIA ,PROGRAMA DE PÓS-GRADUAÇÃO EM NANOCIÊNCIAS E MATERIAIS AVANÇADOS - UFABC ,BIOACTIVE GLASSES ,HOLMIUM ,BRACHYTHERAPY ,HYPERTHERMIA ,SÍNTESE SOL GEL ,HÓLMIO ,TRATAMENTO DE CÂNCER ,BONE REGENERATION ,SOL GEL ,CANCER TREATMENT ,VIDROS BIOATIVOS ,BRAQUITERAPIA ,MAGNETITE NANOPARTICLES ,NANOPARTÍCULAS DE ÓXIDO DE FERRO - Abstract
Orientadora: Profa. Dra. Juliana Marchi Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Nanociências e Materiais Avançados, Santo André, 2019. A hipertermia é uma terapia de tratamento de câncer que consiste em aumentar a temperatura do tecido biológico contendo células cancerígenas a temperaturas até 43 °C, a qual afeta as células cancerígenas e causa mínimos danos a células saudáveis. A braquiterapia é um tipo de radioterapia interna onde são implantadas in situ fontes radioativas diretamente ou próximas ao tumor, tais como sementes ou fios radioativos. Estes dois tipos de tratamento apresentam as vantagens de serem procedimentos menos invasivos em relação aos tratamentos de câncer convencionais, de curta duração e capazes de atingir locais pequenos e/ou de difíceis acessos no corpo humano, com menores danos às células saudáveis. Este trabalho visou sintetizar, pelo método sol-gel, vidros bioativos do sistema 58SiO2-33CaO-9P2O5 contendo nanopartículas de óxido de ferro e óxido de hólmio a fim de obter um material com propriedades magnéticas e radioativas promissoras para o tratamento de câncer por hipertermia e braquiterapia e com propriedades osteocondutoras promissoras para regeneração óssea, podendo assim ser promissoras no tratamento de câncer ósseo. As nanopartículas de óxido de ferro (em diferentes proporções) e o nitrato de hólmio (10 % em massa) foram adicionadas aos vidros durante a síntese sol-gel. Os materiais foram caracterizados por calorimetria diferencial de varredura (DSC), difração de raios X (DRX), microscopia eletrônica de varredura (MEV), espectroscopia de raio X por dispersão de energia (EDS), espalhamento de luz dinâmica (DLS), espectroscopia de fotoemissão de raios X (XPS), magnetização através de dispositivo supercondutor de interferência quântica (SQUID) e ativação neutrônica. Os resultados indicaram que a estrutura do material é composta de vidros tipicamente amorfos com fases cristalinas referentes à presença de óxido de ferro e carbonato de cálcio, com transições térmicas condizentes com literatura, de tamanho de partícula micrométricos, com propriedades superparamagnéticas e radioativas adequadas à potencial aplicação no tratamento de câncer ósseo por hipertermia e braquiterapia. The hyperthermia treatment is an alternative cancer treatment consisting of the temperature increase in the biological tissue with cancer cells until 43 celsius degrees affecting only malignant cells and preserving healthy cells. The brachytherapy is a kind of internal radiotherapy where the radiotherapy sources are directly implanted in situ or close to the tumor region, through radioactive seeds. These two methods show advantages in comparison to the regular cancer treatment methods, due the fact of being non-invasive, short duration and able to achieve small and difficult access places in the human body, with less damage to the healthy cells. This work was focused in synthetize biocompatible glasses through sol-gel quick-alkali method in the system SiO2-CaO-P2O5, containing magnetite nanoparticles and holmium oxide. The main goal of this work is obtain materials with magnetic and radioactive properties and with bone regeneration properties, being a promising material to be used in bone cancer treatment, through hyperthermia and brachytherapy. The iron oxide nanoparticles and holmium nitrate were dispersed in the glass matrix during the sol-gel synthesis. The materials obtained were characterized by differential scanning calorimeter (DSC), X ray diffraction (XRD, spectroscopy by x ray dispersion (EDS), dynamic light scattering (DLS), spectroscopy by X ray photo emission (XPS) and superconducting quantum interference device (SQUID). The results show that structure of the synthesized materials are consisted of amorphous glasses with crystalline phases of magnetite and calcium carbonate, consistent thermal transactions, micrometric particle size and suitable superparamagnetic and radioactive properties. In conclusion, the material obtained is potentially suitable for bone cancer treatment by hyperthermia and brachytherapy.
- Published
- 2019
49. Brachytherapy in breast cancer: factors predictive of local and distant recurrence
- Author
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Visintin, Carolina Del Negro, Pontifícia Universidade Católica de Campinas, and Reis, Leonardo Oliveira
- Subjects
Cirurgia ,Radiotherapy ,Cirurgia conservadora ,Brachytherapy ,Conservative surgery ,Mama ,Accelerated partial breast irradiation ,Breast cancer ,Radioterapia ,Irradiação parcial acelerada de mama ,Câncer de mama ,Surgery ,Breast ,Braquiterapia - Abstract
O presente estudo tem como objetivo avaliar fatores preditivos de recidiva local e de metástase a distância em pacientes submetidas a braquiterapia como tratamento complementar do câncer de mama após cirurgias. Justifica-se como busca de produção de conhecimento relativo ao tratamento adjuvante no câncer de mama e identificação de fenótipos que podem estar relacionados a melhor resposta terapêutica em pacientes submetidas a braquiterapia com múltiplos cateteres. Metodologicamente, o estudo foi organizado como coorte, retrospectivo, com amostra de conveniência. Conta com a participação de pacientes diagnosticadas com lesões precursoras ou neoplasia invasiva de mama em estadiamento clínico inicial, classificados em 0, I e IIA, submetidas a braquiterapia de mama como tratamento adjuvante à cirurgia. Foram coletados dados de prontuários no Instituto Radium de Campinas, entre março de 2004 e junho de 2013, com 377 pacientes as quais receberam irradiação parcial acelerada da mama (APBI) utilizando múltiplos cateteres como terapia adjuvante à cirurgia conservadora da mama. Oitenta por cento dessas pacientes tinham o diagnóstico de carcinoma invasivo e 20% de carcinoma ductal in situ. O estadiamento patológico foi assim distribuído: 0: 20%, I: 68% e II: 12%. A maioria das pacientes apresentavam receptor de estrogênio positivo (86%) e receptor de progesterona positivo (79%), HER2 negativo (82%) e 63% tinham grau de diferenciação tumoral 3. Foram relacionados os dados coletados com eventos de recorrência local e metástase a distância. O tempo médio de follow-up foi de 50.5 meses. A idade média das pacientes era de 59 anos. O tamanho médio do tumor foi de 1.37 cm. A recorrência local foi presente em 12 pacientes (3.18%) e metástase a distância foi registrada em sete pacientes (1.86%). O seguimento em 2 anos, 5 anos e 10 anos apresentou taxa livre de recorrência local de 99.3%, 97.1% e 83.8% respectivamente. Em análise univariada, casos Her2 negativo (OR: 16.42, 95% CI: 1.63-165.13, p=0.01) e receptores de estrogênio e progesterona (OR: 4.17, 95% CI: 1.30-13.36, p=0.01) foram estatisticamente significantes na recorrência local. Concluímos, portanto, que a irradiação parcial acelerada da mama com braquiterapia com uso de múltiplos cateteres intersticiais é uma técnica segura para tratamento adjuvante em grupo seleto de pacientes com diagnóstico de câncer de mama inicial. Controle locorregional da doença apresentou taxas excelentes e pouca toxicidade. Em análise univariada, casos Her2 positivos e receptoras de estrogênio e progesterona negativo foram estatisticamente significantes para recidiva local. This present study aims to evaluate predictive factors of local recurrence and distant metastasis in patients submitted to brachytherapy as a complementary treatment of breast cancer after surgeries. It is justified as a search for production of knowledge regarding the adjuvant treatment in breast cancer and identification of phenotypes that may be related to the better therapeutic response in patients submitted to brachytherapy with multiple catheters. Methodologically, the study was organized as a retrospective cohort with a convenience sample. It counts on the participation of patients diagnosed with precursor lesions or invasive breast neoplasm in initial clinical staging, classified as 0, I and IIA, submitted to breast brachytherapy as an adjuvant treatment to surgery. Data from medical records were collected at the Radium Institute of Campinas between March 2004 and June 2013, with 377 patients receiving partial accelerated partial breast irradiation (APBI) using multiple catheters as adjuvant therapy to breast conserving surgery. Eighty percent of these patients had the diagnosis of invasive carcinoma and 20% of ductal carcinoma in situ. The pathological staging was thus distributed: 0: 20%, I: 68% and II: 12%. Most of the patients had estrogen receptor positive (86%) and progesterone receptor positive (79%), HER2 negative (82%) and 63% had degree of tumor differentiation. Data were collected with local recurrence events and distant metastasis. The mean follow-up time was 50.5 months. The mean age of the patients was 59 years. The mean tumor size was 1.37 cm. Local recurrence was present in 12 patients (3.18%) and distant metastasis was recorded in seven patients (1.86%). Follow-up at 2 years, 5 years and 10 years presented a free recurrence rate of 99.3%, 97.1% and 83.8%, respectively. In univariate analysis, Her2 negative (OR: 16.42, 95% CI: 1.63-165.13, p = 0.01) and estrogen and progesterone receptors (OR: 4.17, 95% CI: 1.30-13.36, p = 0.01) were statistically significant in local recurrence. We conclude, therefore, that the accelerated partial irradiation of the breast with brachytherapy with the use of multiple interstitial catheters is a safe technique for adjuvant treatment in a select group of patients with diagnosis of initial breast cancer. Locoregional disease control presented excellent rates and low toxicity. In univariate analysis, Her2 positive and estrogen receptor and progesterone negative cases were statistically significant for local recurrence.
- Published
- 2018
50. Focal therapy for prostate cancer: physiopathphyological mechanisms
- Author
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Monteiro, Ana Carolina Viveiros, Pinto, Anabela Mota, and Cordeiro, Carlos Jorge Castilho Rabaça Correia
- Subjects
Criocirurgia ,Focal therapy ,Tratamento focal ,Brachytherapy ,Neoplasmo Prostático ,High-Intensity Focused Ultrasound Ablation ,Prostatic Neoplasms ,Ultrassom focalizado de alta intensidade ,Braquiterapia ,Cryosurgery - Abstract
Trabalho Final do Mestrado Integrado em Medicina apresentado à Faculdade de Medicina O cancro da próstata constitui a neoplasia sólida mais comum na Europa, tendo-se assistido a um aumento da incidência nos últimos anos. Atualmente, os principais métodos de tratamento como a prostectomia radical, radioterapia externa e braquiterapia estão associados a complicações e morbilidades significativas, pelo que existe uma crescente procura por outras opções terapêuticas.Este trabalho tem como objetivo explorar as principais técnicas do tratamento focal do cancro da próstata e os seus mecanismos fisiopatológicos através dos quais a destruição tumoral é alcançada. Para a elaboração deste trabalho, foi feita uma revisão da literatura nas bases de dados PubMed e The Cochrane Library de artigos publicados nos últimos 10 anos, nas línguas inglesa, portuguesa, francesa e espanhola. A triagem dos artigos efetuou-se com base nos títulos e nos abstracts, a partir dos quais foi selecionado um total de 101 artigos.Várias modalidades de energia têm sido estudadas na destruição tumoral. A criocirurgia foi a primeira técnica de tratamento focal a ser utilizada na próstata e recorre a baixas temperaturas para causar o congelamento da lesão. O HIFU (ultrassom focalizado de alta intensidade) provoca necrose de coagulação do tumor através do aumento da temperatura. A braquiterapia focal recorre à libertação localizada de radiação para causar a destruição das células neoplásicas. A utilização destas técnicas minimamente invasivas permite a destruição da lesão tumoral localizada sem danificar os tecidos saudáveis adjacentes. Desta forma, é possível erradicar a neoplasia com uma morbilidade reduzida e com a manutenção da qualidade de vida do doente. Prostate cancer is the most common solid neoplasm in Europe, with an increased incidence in the latest years. Currently, the main treatment methods such as radical prostectomy, external beam radiation therapy and brachitherapy are associated with significant complications and morbidities, so there is a growing demand for other therapeutic options.This work aims to explore the main techniques of focal treatment of prostate cancer and its pathophysiological mechanisms through which tumor destruction is achieved.To do this work, it was made a review of the literature in the PubMed and The Cochrane Library databases of articles published in the last 10 years in the English, Portuguese, French and Spanish languages. The articles were chosen based on titles and abstracts, from which a total of 101 articles were selected.Several energy modalities have been studied in tumor destruction. Cryosurgery was the first focal therapy technique utilized in the prostate and uses low temperatures to cause the freezing of the lesion. HIFU (high intensity focused ultrasound) causes coagulation necrosis through the increasing of the temperature. Focal brachytherapy uses the localized release of radiation to cause the destruction of neoplastic cells.The use of these minimally invasive techniques allows for the destruction of the localized tumor lesion without damaging the adjacent healthy tissues. In this way, it is possible to eradicate cancer with reduced morbidity and to maintain the quality of life of the patient.
- Published
- 2018
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