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, Loïc De Carlan

Research output: Contribution to journalReview articlepeer-review


Background. In radiotherapy, Monte Carlo (MC) methods are considered a gold standard to calculate accurate dose distributions, particularly in heterogeneous tissues. EURADOS organized an international comparison with six participants applying different MC models to a real medical linear accelerator and to one homogeneous and four heterogeneous dosimetric phantoms. Aims. The aim of this exercise was to identify, by comparison of different MC models with a complete experimental dataset, critical aspects useful for MC users to build and calibrate a simulation and perform a dosimetric analysis. Results. Results show on average a good agreement between simulated and experimental data. However, some significant differences have been observed especially in presence of heterogeneities. Moreover, the results are critically dependent on the different choices of the initial electron source parameters. Conclusions. This intercomparison allowed the participants to identify some critical issues in MC modelling of a medical linear accelerator. Therefore, the complete experimental dataset 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 medical linear accelerator.

Original languageEnglish
Pages (from-to)314-321
Number of pages8
JournalAnnali dell'Istituto Superiore di Sanita
Issue number4
Publication statusPublished - Jan 1 2017


  • Medical physics
  • Monte Carlo methods
  • Radiation protection
  • Radiotherapy

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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