Patent ID: 8405042
Filing Date: 2013-03-26
Classification: A61N

Abstract:
1. A particle beam therapy system that irradiates a charged particle beam, accelerated by an accelerator and scanned by a scanning electromagnet, onto an irradiation subject, the particle beam therapy system comprising: an irradiation management apparatus that controls the scanning electromagnet, based on target irradiation position coordinates of the charged particle beam; and a position monitor that measures measurement position coordinates of the charged particle beam, wherein the irradiation management apparatus has a command value creator that outputs a control input to the scanning electromagnet, for scanning the charged particle beam, based on the target irradiation position coordinates and correction data, said correction data having been created in a preliminary irradiation, wherein (i) said preliminary irradiation is performed prior to said irradiation of said subject and (ii) an excitation pattern of the scanning electromagnet of said preliminary irradiation is the same as an excitation pattern of the scanning electromagnet of a main irradiation plan for actual irradiation of the subject, and wherein the correction data is created on a basis of the target irradiation position coordinates and the measurement position coordinates measured by the position monitor in said preliminary irradiation.