Please use this identifier to cite or link to this item: https://ninho.inca.gov.br/jspui/handle/123456789/14784
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dc.contributor.authorFortes, Saulo Santos-
dc.contributor.authorRosa, Luiz Antonio Ribeiro da-
dc.date.accessioned2023-09-08T12:42:32Z-
dc.date.available2023-09-08T12:42:32Z-
dc.date.issued2020-
dc.identifier.citationFORTES, Saulo Santos; ROSA, Luiz Antônio Ribeiro da. Bony-based and prostate-based image guidance for lo-calized prostate cancer radiotherapy. Braz. J. Rad. Sci., p. 1-18, 2020.-
dc.identifier.issn2319-0612-
dc.identifier.urihttps://ninho.inca.gov.br/jspui/handle/123456789/14784-
dc.descriptionp. 1-18.: il. color.-
dc.description.abstractAn important modality for the treatment of prostate cancer is teletherapy. The use of image-guided radiotherapy (IGRT) is a valuable tool in this treatment. This study retrospectively compared how repositioning the patient based on bone structure (B-ISO) and the prostate itself (P-ISO) affected the volumetric dose in the rectum, bladder, and clinical target volume (CTV). Additionally, the normal tissue complication probability (NTCP) for the rectum was computed. We evaluated 155 cone-beam computed tomography (CBCT) from 8 patients. The treatment plans used beam modulation techniques. The planning target volume (PTV) margin adopted in both scenarios was 1 cm. The organs of interest were outlined over each CBCT and then treatment plans were applied so that the absorbed dose could be computed. NTCP values were calculated for the rectum. Analyzing dose-volume metrics published by the Quantitative Analysis of Normal Tissue Effects in the Clinic (QUANTEC), there was no significant difference between the two repositioning strategies for the rectum and bladder. There was a slight degradation in CTV coverage for the B-ISO strategy, but still with adequate coverage. Analysis of the uniform equivalent dose (EUD) and NTCP for the rectum showed little sensitivity to the strategy used. The present study showed that the use of CBCT in radiotherapy for prostate cancer treatment did not significantly improve volumetric doses for the rectum, bladder, and CTV, as well as NTCP for the rectum.pt_BR
dc.publisherBraz. J. Rad. Sci.pt_BR
dc.subjectProstate Radiotherapypt_BR
dc.subjectRadioterapia de róstatapt_BR
dc.subjectCone-Beam Computed Tomographypt_BR
dc.subjectTomografia Computadorizada de Feixe Cônicopt_BR
dc.subjectRepositioning Strategypt_BR
dc.subjectEstratégia de Reposicionamentopt_BR
dc.titleBony-based and prostate-based image guidance for lo-calized prostate cancer radiotherapypt_BR
dc.TypeArticlept_BR
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