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标题：EURADOS intercomparison exercise on Monte Carlo modelling of a medical linear accelerator Barbara Caccia, Maïwenn Le Roy, Valentin Blideanu, Claudio Andenna, Chairmadurai Arun Damian Czarnecki, Tarek El Bardouni, Régine Gschwind, Nicolas Huot, Eric Martin, Klemens Zink, Mariam Zoubair, Robert Price and Loïc de Carlan
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作者：Barbara Caccia ; Maïwenn Le Roy ; Valentin Blideanu 等
期刊名称：Annali dell'Istituto Superiore di Sanita
印刷版ISSN：0021-2571
出版年度：2017
卷号：53
期号：4
页码：314-321
DOI：10.4415/ANN_17_04_07
出版社：Editrice Kurtis Srl
摘要：Background. In radiotherapy, Monte Carlo (MC) methods are considered a gold standardto calculate accurate dose distributions, particularly in heterogeneous tissues.EURADOS organized an international comparison with six participants applying differentMC models to a real medical linear accelerator and to one homogeneous and fourheterogeneous dosimetric phantoms.Aims. The aim of this exercise was to identify, by comparison of different MC modelswith a complete experimental dataset, critical aspects useful for MC users to build andcalibrate a simulation and perform a dosimetric analysis.Results. Results show on average a good agreement between simulated and experimentaldata. However, some significant differences have been observed especially in presenceof heterogeneities. Moreover, the results are critically dependent on the differentchoices of the initial electron source parameters.Conclusions. This intercomparison allowed the participants to identify some criticalissues in MC modelling of a medical linear accelerator. Therefore, the complete experimentaldataset assembled for this intercomparison will be available to all the MC users,thus providing them an opportunity to build and calibrate a model for a real medicallinear accelerator.
关键词：health physics; radiotherapy; Monte Carlo methods; radiation protection