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摘要The invention relates to a method of evaluating a method for determining a cumulative radiation therapy dose received during a radiotherapy treatment, the so-called method to be evaluated, according to which: a deformable model of at least an organ to be treated and at least one neighboring organ, and using said model a series of simulated images, interpretable by the method to be evaluated, is generated; the cumulative dose calculated by the method to be evaluated, applied to at least one of said simulated images, is compared with a cumulative reference dose, so as to deliver at least one information representative of the quality of said method, said cumulative reference dose being obtained taking into account anatomical deformations applied to said organs, so as to determine a reference dose actually received at each treatment session by said organs, according to their actual shape and / or position at this session.