Radiation treatment system and radiation therapy program

摘要

PROBLEM TO BE SOLVED: To provide a raditherapeutic system or the like capable of reducing the measurement errors of the dose of a therapeutic beam caused by attenuation of scattering radiation in a subject itself and measuring scattering radiation source distribution having high quantitative property by reconfiguring a scattering radiation source using a high-speed and accurate attenuation correction method.;SOLUTION: In the radiotherapeutic system of a type for monitoring the dose of the therapeutic radiation by the scattering radiation, in order to correct the attenuation by the passing of the scattering radiation through the body, a plane where the scattering radiation source is present is determined, a passing path between the scattering radiation source and a detector is determined on the basis of CT images, the degree of the attenuation is estimated and influence by the attenuation included in the detected result of the scattering radiation is corrected.;COPYRIGHT: (C)2009,JPO&INPIT