PARTICLE BEAM TREATMENT DEVICE, OPERATION METHOD THEREOF, AND MOVING PLATE

• Main Authors: MAEDA KAZUTAKA, NAGAMOTO YOSHIFUMI, KITAGAWA KIYOHIKO
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2018
• Subjects: ELECTROTHERAPY; HUMAN NECESSITIES; HYGIENE; MAGNETOTHERAPY; MEDICAL OR VETERINARY SCIENCE; RADIATION THERAPY; ULTRASOUND THERAPY

PROBLEM TO BE SOLVED: To provide a particle beam treatment device capable of acquiring an X-ray image of high quality with a simple configuration, and performing treatment in a short time, an operation method thereof, and a moving plate.SOLUTION: A particle beam treatment device 10 includes a particle beam irradiation machine 16 for emitting a particle beam B, a rotary gantry 21 for supporting the particle beam irradiation machine 16, a moving floor composed of a plurality of moving plates 37 along a circling direction of the rotary gantry 21, which forms a horizontal part below a top plate 18 on which an irradiated body is placed, an X-ray generator 27a for generating an X-ray, and an X-ray detector 27b for detecting an X-ray arriving through the moving floor. At least one of the moving plates 37 includes a first floor member that transmits an X-ray so that it can be detected by the X-ray detector 27b, and a second floor member whose X-ray transmissivity is smaller than that of the first floor member. The first floor member and the second floor member are formed of the same material, and the first floor member is thinner than the second floor member.SELECTED DRAWING: Figure 3 【課題】簡素な構成で良質なＸ線画像を取得できるとともに治療時間の短い粒子線治療装置、その運転方法、及び移動板を提供する。【解決手段】粒子線治療装置１０は、粒子線Ｂを出射する粒子線照射機１６と、粒子線照射機１６を支持する回転ガントリ２１と、回転ガントリ２１の周回方向に沿って複数枚の移動板３７で構成され、被照射体を載置する天板１８の下方では水平部を形成する移動床と、Ｘ線を発生するＸ線発生器２７ａと、移動床を介して到達するＸ線を検出するＸ線検出器２７ｂと、を備え、移動板３７の少なくとも１枚は、Ｘ線をＸ線検出器２７ｂで検出可能に透過する第１床部材と、第１床部材よりＸ線透過率の小さい第２床部材と、を備え、第１床部材と第２床部材とは同一の材質であり、第１床部材の厚さは第２床部材の厚さより薄い。【選択図】 図３