Use este identificador para citar ou linkar para este item: http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/1273
Título: MCMEG: simulations of both PDD and TPR for 6MV LINAC photon beam using different MC codes - DOI: 10.1016
Título do periódico: Radiation Physics and chemistry
Autor(es): Fonseca, T.C.F.
Mendes, Bruno Melo
Lacerda, Marco Aurelio de Souza
Silva, L.A.C.
Paixão, L.
Bastos, F.M.
Ramirez, J.V.
Junior, J.P. R.
Afiliação: Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo horizonte, MG, Brasil
Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo horizonte, MG, Brasil
Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo horizonte, MG, Brasil
Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo horizonte, MG, Brasil
Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, MG, Brasil
Instituto Nacional de Câncer José de Alencar Gomes, INCA, Rio de Janeiro, RJ, Brasil
Universidad Nacional de San Agustin de Arequipa, Arequipa, Perú
Universidade Federal do Rio de Janeiro, UFRJ, Rio de Janeiro, RJ, Brasil
Data do documento: 2017
Palavras-chave: Monte Carlo Modelling Expert Group photon beam;Simulation;6 MV linac photon beam
Resumo: The Monte Carlo Modelling Expert Group (MCMEG) is an expert network specializing in Monte Carlo radiation transport and the modelling and simulation applied to the radiation protection and dosimetry research field. For the first inter-comparison task the group launched an exercise to model and simulate a 6 MV LINAC photon beam using the Monte Carlo codes available within their laboratories and validate their simulated results by comparing them with experimental measurements carried out in the National Cancer Institute (INCA) in Rio de Janeiro, Brazil. The experimental measurements were performed using an ionization chamber with calibration traceable to a Secondary Standard Dosimetry Laboratory (SSDL). The detector was immersed in a water phantom at different depths and was irradiated with a radiation field size of 10×10 cm2. This exposure setup was used to determine the dosimetric parameters Percentage Depth Dose (PDD) and Tissue Phantom Ratio (TPR). The validation process compares the MC calculated results to the experimental measured PDD20,10 and TPR20,10. Simulations were performed reproducing the experimental TPR20,10 quality index which provides a satisfactory description of both the PDD curve and the transverse profiles at the two depths measured. This paper reports in detail the modelling process using MCNPx, MCNP6, EGSnrc and Penelope Monte Carlo codes, the source and tally descriptions, the validation processes and the results.
Acesso: L
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