19 results on '"Pantano N"'
Search Results
2. TSV-assisted Hybrid FinFET CMOS - Silicon Photonics Technology for High Density Optical I/O
- Author
-
Guermandi, D., primary, Bogaerts, L., additional, Rakowski, M., additional, Ban, Y., additional, De Heyn, P., additional, Pantano, N., additional, Bex, P., additional, De Coster, J., additional, He, J., additional, Phommahaxay, A., additional, Balakrishnan, S., additional, Demeurisse, C., additional, Bertheau, J., additional, Rebibis, K.J., additional, Nolmans, P., additional, Sun, X., additional, Srinivasan, A., additional, Van Huylenbroeck, S., additional, Lardenois, S., additional, Miller, A., additional, Absil, P., additional, Verheyen, P., additional, Velenis, D., additional, Pantouvaki, M., additional, and Van Campenhout, J., additional
- Published
- 2019
- Full Text
- View/download PDF
3. Optimización de Parámetros Utilizando los Métodos de Monte Carlo y Algoritmos Evolutivos. Aplicación a un Controlador de Seguimiento de Trayectoria en Sistemas no Lineales
- Author
-
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina, Universidad Nacional de San Juan, Argentina, Fernández, C., Pantano, N., Godoy, S., Serrano, E., Scaglia, G., Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina, Universidad Nacional de San Juan, Argentina, Fernández, C., Pantano, N., Godoy, S., Serrano, E., and Scaglia, G.
- Abstract
[EN] In this work, a closed-loop control strategy is proposed. It allows tracking optimal profiles for a fed-batch bioprocess. The main advantage of this approach is that the control actions are computed from a linear equations system without linearizing the mathematical model, which allows working in any range. In addition, three techniques are developed to tune the controller. First, a completely probabilistic method, Monte Carlo. Second, a methodology based on Genetic Algorithms, an evolutionary optimization technique. Third, a Hybrid Algorithm, combining above algorithms advantages. Here, the objective function is to find the controller parameters that minimize the trajectory tracking total error. The controller performance is evaluated through simulations under normal operations conditions and parametric uncertainty, using the obtained controller parameters., [ES] En este trabajo se propone una estrategia de control en lazo cerrado para el seguimiento de perfiles óptimos previamente definidos para un bioproceso fed-batch. La mayor ventaja de este enfoque es que las acciones de control se calculan resolviendo un sistema de ecuaciones lineales, sin tener que linealizar el modelo matemático, lo que permite trabajar en cualquier rango. Además, se plantean tres técnicas para la sintonización de los parámetros del controlador diseñado. Primero se propone un método de Monte Carlo, el cual es un método probabilístico. En segundo lugar, se presenta una metodología basada en Algoritmos Genéticos, una técnica evolutiva de optimización. La tercera alternativa es el desarrollo de un Algoritmo Híbrido, diseñado a partir de la combinación de los dos métodos anteriores. En todos los casos, el objetivo es encontrar los parámetros del controlador que minimicen el error total de seguimiento de trayectorias. El desempeño del controlador se evalúa a través de simulaciones en condiciones normales de operación y frente a incertidumbre paramétrica, empleando los parámetros del controlador obtenidos.
- Published
- 2018
4. Optimización de Parámetros Utilizando los Métodos de Monte Carlo y Algoritmos Evolutivos. Aplicación a un Controlador de Seguimiento de Trayectoria en Sistemas no Lineales
- Author
-
Fernández, C., primary, Pantano, N., additional, Godoy, S., additional, Serrano, E., additional, and Scaglia, G., additional
- Published
- 2018
- Full Text
- View/download PDF
5. High-Speed TSV Integration in an Active Silicon Photonics Interposer Platform
- Author
-
Bogaerts, L., primary, El-Mekki, Z., additional, Van Huylenbroeck, S., additional, Nolmans, P., additional, Pantano, N., additional, Sun, X., additional, Rakowski, M., additional, Velenis, D., additional, Verheyen, P., additional, Balakrishnan, S., additional, De Heyn, P., additional, Snyder, B., additional, Ban, Y., additional, Srinivasan, S., additional, Lardenois, S., additional, De Coster, J., additional, Detalle, M., additional, Absil, P., additional, Miller, A., additional, Pantouvaki, M., additional, and Van Campenhout, J., additional
- Published
- 2018
- Full Text
- View/download PDF
6. Hybrid 14nm FinFET - Silicon Photonics Technology for Low-Power Tb/s/mm2 Optical I/O
- Author
-
Rakowski, M., primary, Ban, Y., additional, De Heyn, P., additional, Pantano, N., additional, Snyder, B., additional, Balakrishnan, S., additional, Van Huylenbroeck, S., additional, Bogaerts, L., additional, Demeurisse, C., additional, Inoue, F., additional, Rebibis, K. J., additional, Nolmans, P., additional, Sun, X., additional, Bex, P., additional, Srinivasan, A., additional, De Coster, J., additional, Lardenois, S., additional, Miller, A., additional, Absil, P., additional, Verheyen, P., additional, Velenis, D., additional, Pantouvaki, M., additional, and Van Campenhout, J., additional
- Published
- 2018
- Full Text
- View/download PDF
7. Controller design for tracking paths in nonlinear biochemical processes
- Author
-
Fernandez, C., primary, Pantano, N., additional, Romoli, S., additional, Patino, D., additional, Ortiz, O. A., additional, and Scaglia, G., additional
- Published
- 2016
- Full Text
- View/download PDF
8. Progetto di recupero e conservazione dell'ex Monastero di Sant'Agata per struttura ricettiva e centro di formazione
- Author
-
Fianchino, Corrado, Firera, W., Leone, G., Pantano, N., and Papa, C.
- Published
- 2006
9. Investigation of chip-to-chip interconnections for memory-logic communication on 3D interposer technology
- Author
-
Neve, C. Roda, primary, Ryckaert, J., additional, Van der Plas, G., additional, Detalle, M., additional, Beyne, E., additional, Pantano, N., additional, and Verhelst, M., additional
- Published
- 2014
- Full Text
- View/download PDF
10. Liberal Politics and the Parisian Cemetery: David d'Angers and Leon Vaudoyer's Monument to General Foy, 1825 1831
- Author
-
PANTANO, N. A., primary
- Published
- 1997
- Full Text
- View/download PDF
11. Characterization of the dispersion of carbon nanotubes in nanocomposites by means of a non-destructive evaluation technique
- Author
-
A. Pantano, N. Montinaro, D. Cerniglia, F. Micciulla, S. Bistarelli, A. Cataldo, S. Bellucci, and A. Pantano, N. Montinaro, D. Cerniglia, F. Micciulla, S. Bistarelli, A. Cataldo, S. Bellucci
- Subjects
Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine ,CNTs, NDE - Abstract
An extensive use of CNTs enhanced polymer composites can be boosted by novel NDE techniques able to check the quality of the products made of these nanocomposites in order to guarantee that their specifications are met. It is well known in literature that the parameter that much more than others can affect the enhancing capabilities of the added nanoparticles is their dispersion. All the resulting physical properties of the CNTs based polymer composites depend strongly on level of dispersion of the CNTs throughout the matrix. Here we presented a novel NDE technique based on infrared thermography able to test the dispersion of the added nanoparticles in nanocomposites. Two different procedures were selected to prepare epoxy nanocomposites with dissimilar degree of nanoparticle dispersion. The novel NDE technique was then used to compare pairs of specimens whose only difference is represented by the dispersion level, which is much better in the samples manufactured by THINKY, a vacuum planetary mixer, compared to those produced with a less efficient approach. We found a significant difference in the thermal response to the heat transfer transients, i.e. the pairs of specimens, with dissimilar level of dispersion, have clearly distinguishable thermographic outcomes. The raising up of the temperature in samples exposed to the same heat flux, is faster for those with a better level of dispersion, compared to those with a poor dispersion. Thus, the NDE technique can be used to identify consistently the thermal response of a material with respect to another. A reference product, which has the expected dispersion level and achieves the desired design performance, can be used to test the thermal behaviour of other products coming out of the production process and those with poor dispersion can be identified. The mechanisms behind the effects of MWCNTs dispersion on the thermal response of the nanocomposites to the heat transfer transients were identified: homogeneous dispersion maximizes the interface area between MWCNTs and resin, the thermal conductivity of individual MWCNTs is at least four times higher than the thermal conductivity within MWCNTs bundles, the specific heat of individual MWCNTs is one third smaller than the specific heat of MWCNTs bundles.
12. Tecnica non distruttiva per la valutazione dei livelli di dispersione dei nanotubi di carbonio nei compositi a matrice polimerica
- Author
-
A. Pantano, N. Montinaro, D. Cerniglia, F. Micciulla, S. Bistarelli, A. Cataldo, S. Bellucci, and A. Pantano, N. Montinaro, D. Cerniglia, F. Micciulla, S. Bistarelli, A. Cataldo, S. Bellucci
- Subjects
Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine ,Carbon nanotube, Composite, NDE - Abstract
È noto in letteratura che il parametro che molto più di altri può influenzare il potenziale incremento delle proprietà dei compositi a matrice polimerica dovuto alla presenza dei CNTs è la dispersione. Tutte le proprietà fisiche dei compositi polimerici a base di CNTs dipendono fortemente dal loro livello di dispersione nella matrice: una distribuzione omogenea ottimizza le prestazioni, mentre la formazione di aggregati e una scarsa dispersione determinano miglioramenti limitati delle proprietà della matrice. In questo lavoro viene presentata una nuova tecnica di valutazione non distruttiva (NDE) basata sulla termografia a infrarossi in grado di valutare il livello di dispersione dei CNTs nei nanocompositi polimerici. La tecnica NDE è stata utilizzata per confrontare coppie di campioni che differiscono solo per il livello di dispersione. I risultati sperimentali, che mostrano differenze significative nella risposta ai transitori termici, provano che la risposta termica di un nanocomposito consente di stimare il livello di dispersione dei CNTs. Un prodotto di riferimento, che possiede il livello di dispersione atteso e raggiunge le prestazioni progettuali desiderate, può essere utilizzato per testare il comportamento termico di altri prodotti che escono dal processo produttivo e quindi di scartare quelli con livelli di dispersione inadeguati. Sono stati identificati tutti i fenomeni fisici che concorrono a spiegare come la dispersione dei CNTs influenza la risposta dei nanocompositi ai transitori termici. A wide use of advanced carbon nanotube polymer composites can be boosted by new non-destructive evaluation (NDE) techniques that can test the quality of the products to ensure that their specifications are met. It is well known in literature that the parameter that far more than others can affect the enhancing capabilities of the carbon nanotubes is their dispersion. Here we have presented a novel NDE technique based on infrared thermography able to evaluate the dispersion of the added nanoparticles in polymer nanocomposites. The NDE technique was used to compare pairs of samples whose difference is represented only by the level of dispersion. It was found a significant difference in the thermal response to heat transfer transients. Thus, the thermal response of a nanocomposite allows one to identify consistently good levels of dispersion with respect to lower levels of dispersion. A reference product, which has the expected dispersion level and achieves the desired design performance, can be used to test the thermal behaviour of other products coming out of the production process and those with poor dispersion can be identified. The physical phenomena that can explain the effects of multi-walled carbon nanotubes (MWCNTs) dispersion on the thermal response of the nanocomposites to the heat transfer transients were also identified.
13. A case of personalized and precision medicine: Pharmacometabolomic applications to rare cancer, microbiological investigation, and therapy.
- Author
-
Cristoni S, Bernardi LR, Malvandi AM, Larini M, Longhi E, Sortino F, Conti M, Pantano N, and Puccio G
- Subjects
- Adult, Anti-Infective Agents therapeutic use, Antineoplastic Agents therapeutic use, Humans, Male, Metabolome physiology, Tandem Mass Spectrometry, Thioglycolates blood, Metabolomics methods, Peritoneal Neoplasms diagnosis, Peritoneal Neoplasms drug therapy, Peritoneal Neoplasms metabolism, Peritoneal Neoplasms microbiology, Pharmacogenomic Testing methods, Precision Medicine methods
- Abstract
Rationale: Advances in metabolomics, together with consolidated genetic approaches, have opened the way for investigating the health of patients using a large number of molecules simultaneously, thus providing firm scientific evidence for personalized medicine and consequent interventions. Metabolomics is an ideal approach for investigating specific biochemical alterations occurring in rare clinical situations, such as those caused by rare associations between comorbidities and immunosuppression., Methods: Metabolomic database matching enables clear identification of molecular factors associated with a metabolic disorder and can provide a rationale for elaborating personalized therapeutic protocols. Mass spectrometry (MS) forms the basis of metabolomics and uses mass-to-charge ratios for metabolite identification. Here, we used an MS-based approach to diagnose and develop treatment options in the clinical case of a patient afflicted with a rare disease further complicated by immunosuppression. The patient's data were analyzed using proprietary databases, and a personalized and efficient therapeutic protocol was consequently elaborated., Results: The patient exhibited significant alterations in homocysteine:methionine and homocysteine:thiodiglycol acid plasma concentration ratios, and these were associated with low immune system function. This led to cysteine concentration deficiency causing extreme oxidative stress. Plasmatic thioglycolic acid concentrations were initially altered and were used for therapeutic follow-up and to evaluate cysteine levels., Conclusions: An MS-based pharmacometabolomics approach was used to define a personalized protocol in a clinical case of rare peritoneal carcinosis with confounding immunosuppression. This personalized protocol reduced both oxidative stress and resistance to antibiotics and antiviral drugs., (© 2020 John Wiley & Sons, Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
14. Detection of HPV E6 oncoprotein from urine via a novel immunochromatographic assay.
- Author
-
Oliveira CM, Musselwhite LW, de Paula Pantano N, Vazquez FL, Smith JS, Schweizer J, Belmares M, Possati-Resende JC, Vieira MA, Longatto-Filho A, and Fregnani JHTG
- Subjects
- Adult, DNA-Binding Proteins genetics, Female, Human Papillomavirus DNA Tests, Human papillomavirus 16 genetics, Humans, Middle Aged, Oncogene Proteins, Viral genetics, Papillomavirus Infections virology, Repressor Proteins genetics, Uterine Cervical Neoplasms virology, Vagina virology, DNA-Binding Proteins urine, Immunoassay methods, Oncogene Proteins, Viral urine, Repressor Proteins urine
- Abstract
Cervical cancer is a significant public health problem, especially in low- and middle-income countries, where women have little access to cervical cancer screening; consequently 80% of cervical cancer related mortality occurs in these regions. The development of screening methods that need less infrastructure thus represents an urgent medical need. The study aims to compare the detection rates of high-risk human papillomavirus 16 and 18 E6 oncoprotein in urine, vaginal self-collected, and cervical scrapes of women using the OncoE6™ Cervical Test and compare the HPV16 and/or HPV18 E6 detection rates with the HPV DNA testing. Paired urine, vaginal self-collected and cervical specimens were collected from 124 women who participated in cervical cancer screening or treatment in this proof-of-concept study and underwent to HPV16/18-E6 testing and high-risk HPV DNA testing prior to treatment of cervical neoplasia or cancer. Concordance between urinary, vaginal and cervical HPV16/18-E6 and HPV-DNA testing was evaluated for patients classified as negative group (
- Published
- 2020
- Full Text
- View/download PDF
15. Is Proflavine Exposure Associated with Disease Progression in Women with Cervical Dysplasia? A Brief Report.
- Author
-
Pantano N, Hunt B, Schwarz RA, Parra S, Cherry K, Possati-Resende JC, Longatto-Filho A, Fregnani JHTG, Castle PE, Schmeler K, and Richards-Kortum R
- Subjects
- Adult, Cervix Uteri metabolism, Cervix Uteri pathology, Disease Progression, Female, Follow-Up Studies, Humans, Middle Aged, Retrospective Studies, Risk, Uterine Cervical Neoplasms metabolism, Uterine Cervical Neoplasms pathology, Uterine Cervical Dysplasia metabolism, Uterine Cervical Dysplasia pathology, Cervix Uteri diagnostic imaging, Colposcopy methods, Contrast Media administration & dosage, Proflavine administration & dosage, Uterine Cervical Neoplasms diagnostic imaging, Uterine Cervical Dysplasia diagnostic imaging
- Abstract
Proflavine is an acridine dye used with high-resolution microendoscopy for in vivo diagnostic evaluation of cervical epithelial cells. However, there are concerns that even short-term exposure of cervical tissue to dilute proflavine may increase cervical cancer risk. We performed a retrospective analysis of women referred for colposcopy to Barretos Cancer Hospital comparing the risk of cervical disease progression in those whose cervical tissue was (n = 232) or was not exposed (n = 160) to proflavine. Patients in both groups underwent treatment and follow-up based on histopathologic results and per the local standards of care. Progression of disease was evaluated by comparing histopathology from the initial visit to the worst subsequent histopathology result from all follow-up visits. Mean duration of follow-up was 18.7 and 20.1 months for the proflavine-exposed and controls groups, respectively. There were no significant differences in disease progression from normal/CIN1 to CIN2/3 or from any initial diagnosis to invasive cancer between the proflavine exposed and control groups overall. Risks of cervical dysplasia progression observed in this study are in agreement with those of the natural history of cervical cancer. Our results suggest that cervical exposure to dilute proflavine does not increase the risk of cervical precancer and cancer., (© 2018 The Authors. Photochemistry and Photobiology published by Wiley Periodicals, Inc. on behalf of American Society for Photobiology.)
- Published
- 2018
- Full Text
- View/download PDF
16. Diagnosing Cervical Neoplasia in Rural Brazil Using a Mobile Van Equipped with In Vivo Microscopy: A Cluster-Randomized Community Trial.
- Author
-
Hunt B, Fregnani JHTG, Schwarz RA, Pantano N, Tesoni S, Possati-Resende JC, Antoniazzi M, de Oliveira Fonseca B, de Macêdo Matsushita G, Scapulatempo-Neto C, Kerr L, Castle PE, Schmeler K, and Richards-Kortum R
- Subjects
- Adult, Aged, Aged, 80 and over, Brazil epidemiology, Female, Follow-Up Studies, Humans, In Vitro Techniques, Independent Living, Middle Aged, Prognosis, Prospective Studies, Rural Population, Uterine Cervical Neoplasms epidemiology, Uterine Cervical Dysplasia epidemiology, Colposcopy methods, Early Detection of Cancer statistics & numerical data, Microscopy methods, Mobile Health Units statistics & numerical data, Uterine Cervical Neoplasms diagnosis, Uterine Cervical Dysplasia diagnosis
- Abstract
Cervical cancer is a leading cause of death in underserved areas of Brazil. This prospective randomized trial involved 200 women in southern/central Brazil with abnormal Papanicolaou tests. Participants were randomized by geographic cluster and referred for diagnostic evaluation either at a mobile van upon its scheduled visit to their local community, or at a central hospital. Participants in both arms underwent colposcopy, in vivo microscopy, and cervical biopsies. We compared rates of diagnostic follow-up completion between study arms, and also evaluated the diagnostic performance of in vivo microscopy compared with colposcopy. There was a 23% absolute and 37% relative increase in diagnostic follow-up completion rates for patients referred to the mobile van (102/117, 87%) compared with the central hospital (53/83, 64%; P = 0.0001; risk ratio = 1.37, 95% CI, 1.14-1.63). In 229 cervical sites in 144 patients, colposcopic examination identified sites diagnosed as cervical intraepithelial neoplasia grade 2 or more severe (CIN2+; 85 sites) with a sensitivity of 94% (95% CI, 87%-98%) and specificity of 50% (95% CI, 42%-58%). In vivo microscopy with real-time automated image analysis identified CIN2+ with a sensitivity of 92% (95% CI, 84%-97%) and specificity of 48% (95% CI, 40%-56%). Women referred to the mobile van were more likely to complete their diagnostic follow-up compared with those referred to a central hospital, without compromise in clinical care. In vivo microscopy in a mobile van provides automated diagnostic imaging with sensitivity and specificity similar to colposcopy. Cancer Prev Res; 11(6); 359-70. ©2018 AACR ., (©2018 American Association for Cancer Research.)
- Published
- 2018
- Full Text
- View/download PDF
17. Racial/Ethnic Disparities in Cervical Cancer Screening and Outcomes.
- Author
-
Musselwhite LW, Oliveira CM, Kwaramba T, de Paula Pantano N, Smith JS, Fregnani JH, Reis RM, Mauad E, Vazquez FL, and Longatto-Filho A
- Subjects
- Early Detection of Cancer methods, Female, Humans, Papillomaviridae pathogenicity, Papillomavirus Infections complications, Papillomavirus Infections diagnosis, Papillomavirus Infections virology, Papillomavirus Vaccines immunology, Uterine Cervical Neoplasms immunology, Uterine Cervical Neoplasms prevention & control, Uterine Cervical Neoplasms virology, Uterine Cervical Neoplasms diagnosis
- Abstract
Invasive cervical cancer disproportionately affects women without sufficient access to care, with higher rates among minority groups in higher-income countries and women in low-resource regions of the world. Many elements contribute to racial/ethnic disparities in the cervical cancer continuum - from screening and diagnosis to treatment and outcome. Sociodemographic factors, access to healthcare, income and education level, and disease stage at diagnosis are closely linked to such inequities. Despite the identification of such elements, racial/ethnic disparities persist, and are widening in several minority subgroups, particularly in older women, who are ineligible for human papillomavirus (HPV) vaccination and are underscreened. Recent studies suggest that racial/ethnic differences in HPV infection exist and may also have a role in observed differences in cervical cancer. In this review, we provide an overview of the current literature on racial disparities in cervical cancer screening, incidence, treatment and outcome to inform future strategies to reduce persistent inequities., (© 2016 S. Karger AG, Basel.)
- Published
- 2016
- Full Text
- View/download PDF
18. [Considerations on the rehabilitation of the hearing in cochlear implant patients].
- Author
-
Amadori M, Pantano N, Cestaro A, and Babighian G
- Subjects
- Adolescent, Adult, Age of Onset, Aged, Child, Child, Preschool, Humans, Infant, Newborn, Middle Aged, Speech Perception, Cochlear Implants, Deafness rehabilitation
- Abstract
In this study, the Cochlear Implant Programme of the ENT Department of Ospedale Civile di Venezia, is presented. Between 1989 and 1994, after a rigorous selection process, 36 patients were selected to be implanted with a cochlear prostheses: 28 with the multichannel Nucleus 22 device, 5 with the Clarion implant and 3 with the single channel Med-E1 BTE device. The distribution of the patients according to age, etiology, duration of auditory deprivation, age at onset of deafness, is presented. The different speech-coding strategies of the Nucleus system (Wearable Speech Processing, Multipeak speech processing and Spectral Maximum Sound processor) and the stimulation mode (common ground, bipolar, bipolar + 1) as well as the Clarion speech coding strategy (Continuous Interleaved Samples and Compressed Analog) are briefly discussed. The rehabilitation programme, the specific speech recognition assessment test batteries-Consonant Confusion Test, Vocal Confusion Test, Speech Tracking, MAC battery-as they are employed in our department, are presented. As we have analyzed our results, certain factors appear as predicting a favourable outcome: - age of onset of deafness; postlingual patients, who have developed communication skills compare favourably to the perilingual group. - durations of auditory deprivation, as it is related to surviving cells in the cochlea: the shorter the period of deafness, the better the results. - length of electrode insertion, as it is determined by ossification of the cochlea. - high dynamic range of the MAP. - percent of activated electrodes: a number of 10 active electrodes or less predicts a poor outcome. - for simplification reasons, a new variable is introduced-Auditory Deprivation Index- and its positive correlation to the performance presented. - the time period of experience with the device, length and quality of rehabilitation and family support have to be mentioned.
- Published
- 1996
19. [Multichannel cochlear implant: personal experience].
- Author
-
Babighian G, Dominguez M, Pantano N, and Tomasi P
- Subjects
- Adolescent, Adult, Aged, Clinical Protocols, Cochlea physiopathology, Ear, Inner physiopathology, Female, Hearing Loss, Sensorineural etiology, Hearing Loss, Sensorineural physiopathology, Humans, Male, Meningitis complications, Middle Aged, Cochlea surgery, Cochlear Implants, Ear, Inner surgery, Equipment Design, Hearing Loss, Sensorineural rehabilitation
- Abstract
Cochlear Implantation is a recognized procedure for acoustical rehabilitation of the profoundly or totally deaf unable to effectively use a traditional hearing aid. Since 1989, 30 patients (27 postlingual and 3 perilingual) have been operated on by the senior Author with the implantation of a multichannel device: Med-El (3 cases), Clarion (3 case) and Nucleus Mini-22 (24 cases). The first 24 Nucleus cases, with a multipeak speechcoding strategy, are the object of this retrospective report. Selection of patients was performed according to an international protocol which includes PTA and Speech Audiometry, CT and/or MRI imaging of the ear, the Promontorial Test, an evaluation of lip reading ability, a psychological evaluation, a trial with two recent and currently available aids. The operation was carried out under general anesthesia. An extended endaural approach was adopted. The internal package of the device was firmly seated onto the temporalis squama and the electrode array was introduced into the tympanic cleft via a posterior tympanotomy. The electrode system was inserted into the scala tympani through a cochleotomy drilled out at the anteroinferior border of the round window. The whole system was fixed to the bony walls of the mastoid and squama using an ionomeric bone bonding agent. Starting at the second postoperative month and up to the 24th month of utilization of the device, each patient was evaluated with regard to his or her ability to recognize environmental sounds, to detect prosody transitions and to understand speech with and without visual cues. Selected tests, either close or open set, were used from the MAC and the Iowa Cochlear Implant Battery, as well as the Helen test. Telephone conversation was also evaluated. Results were very encouraging in all cases, showing that the multichannel cochlear device provides the properly selected patient a substantial auditory rehabilitation allowing him or her to understand speech in most instances without any visual cue.
- Published
- 1994
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.