Computational modelling of cervix uterus radiation procedure using a virtual anthropomorphic phantom and the MCNPX code

• Autor(a) principal: SANTOS, WILLIAM S.
• Data de Publicação: 2020
• Outros Autores: NEVES, LUCIO P., PERINI, ANA P., SANTOS, CARLA J., BELINATO, WALMIR, SILVA, ROGERIO M.V., SOARES, MARIA R., VALERIANO, CAIO C., CALDAS, LINDA V.E., CONGRESSO BRASILEIRO DE METROLOGIA, 10.; CONGRESSO INTERNACIONAL DE METROLOGIA EL??TRICA, 13.; CONGRESSO INTERNACIONAL DE METROLOGIA MEC??NICA, 5.; CONGRESSO BRASILEIRO DE METROLOGIA DAS RADIA????ES IONIZANTES, 6.; WORKSHOP DA REDE DE METROLOGIA QU??MICA DO INMETRO, 4.; CONGRESSO BRASILEIRO DE METROLOGIA ??PTICA, 3.
• Tipo de documento: Artigo de conferência
• Título da fonte: Repositório Institucional do IPEN
• Texto Completo: http://repositorio.ipen.br/handle/123456789/30988
• topic: absorbed radiation doses; animal tissues; computerized simulation; dosimetry; monte carlo method; organs; phantoms; radiotherapy; uterus

There is a serious, and growing, concern about the increased risk of the emergence of a secondary cancer, radio-induced, associated with radiotherapy treatments. To assess the radiation doses to organs outside the target volume, in this work, several computational exposure scenarios were modelled, based on Monte Carlo simulation (MCNPX code). A Varian 2100c accelerator, and a female virtual anthropomorphic phantom were used, in a simulated treatment of cervical cancer. The determination of the dispersed dose would be important for assessing the risk in different organs or tissues. Four treatment fields were applied, varying the gantry angle. It was possible to observe that the conversion factors for equivalent dose were higher for the AP projection. For the RLAT and LLAT projections, the results were similar, fact that may be attributed to the symmetrical distributions of the organs in relation to the radiation source. The results presented in this work showed that the computational exposure scenario provides a versatile and accurate tool to estimate in a ready way the absorbed doses during a cervical treatment.