PROBLEM TO BE SOLVED: To provide a particle beam treatment apparatus that images an affected site using X-ray irradiation during a treatment time including an irradiation preparation period of a particle beam and irradiation period thereof, and that can manage radiation dose of the particle beam with high accuracy.SOLUTION: The particle beam treatment apparatus is provided that comprises: a particle beam generation device for generating a particle beam an irradiation field formation device that is installed in a treatment room and irradiates a target with the particle beam a particle beam transport system 6 for connecting the particle beam generation device to the irradiation field formation device an X-ray imaging apparatus that is installed in the treatment room and irradiates a target with an X-ray to image the targets position a radiation dose measuring instrument 8 that is installed in the irradiation field formation device and at a position through which the particle beam passes and a control device 400 that when an X-ray is irradiated during a treatment time, performs control so that a measurement result of the X-ray is excluded from the measurement result of the radiation dose measuring instrument 8.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】粒子線の照射準備期間及び照射期間を含めた治療時間中にX線照射による患部撮像を行う粒子線治療装置において、高精度に粒子線の線量管理を行うことができる粒子線治療装置を提供する。【解決手段】粒子線を発生させる粒子線発生装置と、治療室内に設置され、標的に対して粒子線を照射する照射野形成装置と、粒子線発生装置と照射野形成装置とを連絡する粒子線輸送系6と、治療室内に設置され、X線を照射して標的の位置を撮像するX線撮像装置と、照射野形成装置内かつ粒子線が通過する位置に設置された線量計測器8と、治療時間中にX線が照射されるとき、線量計測器8の計測結果からX線の計測結果を除外するように制御する制御装置400を備える粒子線治療装置。【選択図】 図1
