PROBLEM TO BE SOLVED: To provide a particle beam irradiation apparatus which can provide a visual and quantitative confirmation as to how irradiation is actually performed by monitoring a dose profile of dose during particle beam irradiation.SOLUTION: The particle beam irradiation apparatus includes: a beam generation unit a beam emission control unit which controls emission of the particle beam a beam scanning indication unit which two-dimensionally indicates a position of the particle beam in series for each of slices obtained by dividing an affected area to be irradiated in an axial direction of the particle beam a beam scanning unit which two-dimensionally scans the particle beam based on an indication signal from the beam scanning indication unit a phosphor plate which is provided between the beam scanning unit and a patient and emits light in an amount corresponding to a particle dose of the particle beam transmitting therethrough an imaging unit which images the phosphor film for each slice and a display unit which obtains an irradiation dose distribution of each slice from image data imaged by the imaging unit and displays the obtained irradiation dose distribution associated with a scanning position of the particle beam.COPYRIGHT: (C)2011,JPO&INPIT【課題】粒子線ビームの照射中に線量プロファイルをモニタリングし、実際の照射状況を視覚的かつ定量的に確認することができる粒子線ビーム照射装置を提供する。【解決手段】本発明に係る粒子線ビーム照射装置は、ビーム生成部と、粒子線ビームの出射を制御するビーム出射制御部と、照射対象の患部を粒子線ビームの軸方向に分割した各スライスに対して、粒子線ビームの位置を2次元で順次指示するビーム走査指示部と、ビーム走査指示部からの指示信号に基づいて粒子線ビームを2次元で走査するビーム走査部と、ビーム走査部と患者との間に配置され、透過する前記粒子線ビームの粒子線線量に応じた光量で発光する蛍光体板と、蛍光体板をスライス毎に撮像する撮像部と、撮像部で撮像された画像データからスライス毎の照射線量の分布を求め、求めた照射線量の分布を前記粒子線ビームの走査位置と関連付けて表示する表示部と、を備えたことを特徴とする。【選択図】 図5
