6 results on '"García Garzón, José Ramón"'
Search Results
2. 18F-fluorodeoxyglucose positron emission tomography in the diagnosis of malignancy in patients with paraneoplastic neurological syndrome: a systematic review and meta-analysis
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García Vicente, Ana María, Delgado-Bolton, Roberto C., Amo-Salas, Mariano, López-Fidalgo, Jesús, Caresia Aróztegui, Ana Paula, García Garzón, José Ramón, Orcajo Rincón, Javier, García Velloso, María José, de Arcocha Torres, María, Alvárez Ruíz, Soledad, Vicente, Ana María García, Delgado-Bolton, Roberto C., Aróztegui, Ana Paula Caresia, Garzón, José Ramón García, Rincón, Javier Orcajo, Velloso, María José García, de Arcocha Torres, María, Ruíz, Soledad Alvárez, and On behalf of the Oncology Task Force of Spanish Society of Nuclear Medicine and Molecular Imaging
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- 2017
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3. La PET/TC con (11)C-Colina en el Cáncer de Próstata
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García Garzón, José Ramón, Lomeña Caballero, Francisco Juan, and Universitat de Barcelona. Facultat de Medicina
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Positron emission tomography ,Cáncer de próstata ,Prostate cancer ,Càncer de pròstata ,Tomografia per emissió de positrons ,Ciències de la Salut ,Tomografía por emisión - Abstract
INTRODUCCIÓN El cáncer de próstata (CaP) es la neoplasia más frecuente en el hombre y la segunda causa de muerte oncológica. La decisión terapéutica está condicionada por la edad/comorbilidad, clasificación d´Amico y TNM. La elevación de PSA tras la terapia radical es muy sensible pero no permite localizar la recidiva. La sensibilidad de TC/RM es limitada en la infiltración adenopática. La especificidad de la gammagrafía es baja en las metástasis óseas. OBJETIVOS Evaluar si es factible la realización de un estudio “doble fase” 11C-Colina PET/TC. Evaluar la utilidad del 11C-Colina PET/TC en: -la detección de la diseminación linfática o hematógena en pacientes afectos de CaP de riesgo medio/alto. - la tasa de detección de la recurrencia bioquímica del CaP tras la terapia radical. METODOLOGÍA Este estudio comprende los 1016 estudios 11C-Colina PET/TC (junio´2006-octubre´2014). El motivo de la exploración fue recidiva bioquímica (73,2%), estadificación inicial (19,2%) y respuesta terapéutica (7,6%). La 11C-Colina se ha producido en el ciclotrón situado en la misma instalación. La dosis del trazador (296±185 MBq) se ha administrado con el paciente intracámara iniciando la adquisición inmediatamente después. Tras la realización de la TC se han efectuado dos adquisiciones PET de cuerpo completo consecutivas, sin movilización del paciente (ambos estudios PET se reconstruyeron con la TC inicial). Se han valorado las imágenes precoces y tardías, visualmente y calculando el SUVmáximo, considerado dos comportamientos dinámicos: Estable/aumento o descenso. Los hallazgos de la 11C-Colina PET/TC se compararon con otras técnicas de imagen y/o monitorización del PSA. Por cuestiones éticas únicamente las lesiones que suponían un cambio en la estadificación han sido confirmadas histológicamente. RESULTADOS “Doble fase” 11C-Colina PET/TC. Identificamos 106 focos hipermetabólicos: 34 local, 10 inguinal, 34 infradiafragmaticos, 14 supradiafragmaticos, 14 óseos, En el análisis ROC, SUVvariación discriminó mejor entre las lesiones benignas y malignas (área:0,993) seguido por SUVtardío (0,933) y finalmente SUVprecoz (0,665). Extensión inicial El 24,6% de los pacientes presentaron enfermedad extra-prostática. 40% multifocal. 60% en una sola localización: 66.7% infradiafragmáticas; 11,1% supradiafragmática; 22,2% metástasis óseas. Para manejo terapéutico fueron categorizados como: 40% enfermedad loco-regional, 33,3% oligo-metastásica, 16,7% multi-metastásica. A los pacientes con enfermedad loco-regional y oligo-metastásica (73,3%) se les realizo radioterapia de intensidad modulada según los depósitos de 11C-Colina. Recidiva bioquímica El 67% de los pacientes mostraron uno o más depósitos de 11C-Colina: 30% recurrencia local, 16% infradiafragmática, 14% supradiafragmática, 7% ósea. La relación entre el PSA y la tasa de detección de la recurrencia fue: 40% PSA4ng/ml. Comparamos la 11C-Colina PET/TC con la 18F-FDG PET/TC, la RM multiparamétrica pélvica y la gammagrafía ósea: El 41% de los pacientes mostraron uno o más depósitos de 18F-FDG: 14% recurrencia local, 9% infradiafragmática, 11% supradiafragmática, 7% ósea. En el 29% de los pacientes la RM y la 11C-Colina PET/TC fueron discordantes: 50% sólo RM positive por recurrencia local (, OBJECTIVES Feasibility of “Dual Phase” 11Cho-PET. Usefulness of 11Cho-PET in detecting lymphatic/haematogenous involvement in intermediate/high-risk PCa, Diagnostic performance in detection rate of biochemical recurrence. METHODOLOGY 1016 PCa who underwent 11Cho-PET (June/2006-october/2014) for biochemical recurrence (73.2%) initial staging (19.2%) and treatment response (7.6%). 11C-Choline was synthesized in onsite-cyclotron. 296±185MBq was administered with patient placed in PET-camera. Acquisition was immediately started: after CT, two whole-body PET were acquired without moving patient (Both-PETs reconstructed with initial-CT). Early/Delayed images were visually and SUVmax evaluated. Two dynamic patterns: stable/increasing and decreasing. 11Cho-PET were compared with imaging techniques and/or monitoring-PSA. Due to ethical reasons, only lesions that would change staging were histologically confirmed. RESULTS “Dual Phase”-11Cho-PET. We identified 106 hypermetabolic foci: 34 local, 10 inguinal, 34 infradiaphragmatic, 14 supradiaphragmatic, 14 bone. On the ROC analysis, SUVvariation best discriminated benign from malignant lesions (area:0,993) followed by SUVdelay (0,933) and finally SUVearly (0,665). Initial staging Extraprostatic disease was found in 24.6%: 40% Multifocal disease and 60% Single site: 66.7% infradiaphragmatic; 11.1% supradiaphragmatic; 22.2% bone metastases. For treatment purposes, patients were classified as: 40% locoregional disease; 33.3% oligometastasic; 16.7% multimetastasic. Locoregional/oligometastatic patients (73.3%) underwent intensity-modulated-radiation-therapy based on 11C-Choline uptake. Biochemical recurrence In 67% of patients, 11C-Choline foci were found: 30% Local recurrenc, 16% infradiaphragmatic, 14% supradiaphragmatic, 7% bone metastases. Relationship between PSA and rate of detection was: 40% PSA4ng/ml. Compared 11Cho-PET with 18F-FDG PET/CT, multiparametric pelvic MRI and BS: In 41% of patients, one or more 18F-FDG foci were found: 14% Local recurrence, 9% infradiaphragmatic, 11% supradiaphragmatic, 7% bone metastases. In 29% MRI and 11Cho-PET were discordant: 50% only MRI local recurrence positive (
- Published
- 2015
4. F-fluorodeoxyglucose positron emission tomography in the diagnosis of malignancy in patients with paraneoplastic neurological syndrome: a systematic review and meta-analysis.
- Author
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García Vicente, Ana María, Alvárez Ruíz, Soledad, Delgado-Bolton, Roberto, Amo-Salas, Mariano, López-Fidalgo, Jesús, Caresia Aróztegui, Ana Paula, García Garzón, José Ramón, Orcajo Rincón, Javier, García Velloso, María José, and Arcocha Torres, María
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PARANEOPLASTIC syndromes ,POSITRON emission tomography ,TUMORS ,NEOPLASTIC cell transformation ,META-analysis - Abstract
Purpose: The detection of occult cancer in patients suspected of having a paraneoplastic neurological syndrome (PNS) poses a diagnostic challenge. The aim of our study was to perform a systematic review and meta-analysis to assess the diagnostic performance of FDG PET for the detection of occult malignant disease responsible for PNS. Methods: A systematic review of the literature (MEDLINE, EMBASE, Cochrane, and DARE) was undertaken to identify studies published in any language. The search strategy was structured after addressing clinical questions regarding the validity or usefulness of the test, following the PICO framework. Inclusion criteria were studies involving patients with PNS in whom FDG PET was performed to detect malignancy, and which reported sufficient primary data to allow calculation of diagnostic accuracy parameters. When possible, a meta-analysis was performed to calculate the joint sensitivity, specificity, and detection rate for malignancy (with 95% confidence intervals [CIs]), as well as a subgroup analysis based on patient characteristics (antibodies, syndrome). Results: The comprehensive literature search revealed 700 references. Sixteen studies met the inclusion criteria and were ultimately selected. Most of the studies were retrospective (12/16). For the quality assessment, the QUADAS-2 tool was applied to assess the risk of bias. Across 16 studies (793 patients), the joint sensitivity, specificity, and detection rate for malignancy with FDG PET were 0.87 (95% CI: 0.80-0.93), 0.86 (95% CI: 0.83-0.89), and 14.9% (95% CI: 11.5-18.7), respectively. The area under the curve (AUC) of the summary ROC curve was 0.917. Homogeneity of results was observed for sensitivity but not for specificity. Some of the individual studies showed large 95% CIs as a result of small sample size. Conclusions: The results of our meta-analysis reveal high diagnostic performance of FDG PET in the detection of malignancy responsible for PNS, not affected by the presence of onconeural antibodies or clinical characteristics. [ABSTRACT FROM AUTHOR]
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- 2017
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5. Diagnóstico precoz de afasia progresiva primaria mediante tomografía por emisión de positrones
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García Garzón, José Ramón, primary, Simó Perdigó, Marc, additional, González González, José Manuel, additional, Pérez Moure, Gumer, additional, López Gandul, Sergi, additional, and Lomeña Caballero, Francisco, additional
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- 2005
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6. Consecutive bone scintigraphy in bilateral hip migratory transient osteoporosis.
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García Garzón JR
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- Adult, Arthralgia diagnosis, Arthralgia etiology, Disease Progression, Humans, Male, Osteoporosis complications, Radionuclide Imaging, Radiopharmaceuticals, Time Factors, Hip Joint diagnostic imaging, Osteoporosis diagnostic imaging, Technetium Tc 99m Medronate
- Abstract
A 34-year-old male was seen with severe right hip pain, rapidly worsening in 1 to 2 weeks, with no history of trauma. There was no fever and laboratory studies were normal. Bone scan showed markedly increased uptake in the femoral head. Magnetic resonance imaging showed bone marrow edema. The patient became asymptomatic with conservative therapy, confirmed by returning toward normal on bone scintigraphy 5 months later. He was readmitted 4 months later because the patient developed similar symptoms on the opposite side. A bone scan showed demineralization of the left femoral head. He recovered on conservative therapy and there was a normal bone scan one year after the initial admission.
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- 2005
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