PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus in which the efficiency of the operation that attaches a photo timer and replaces internal components is improved.SOLUTION: The radiation imaging apparatus includes: a radiation detection unit 108 configured to detect radiation a housing configured to contain the radiation detection unit 108 and a photo timer fixing member 127 configured to fix a photo timer light receiving unit 107 for measuring the radiation dose to the housing wherein the photo timer fixing member 127 is positioned such that the photo timer light receiving unit can be detached by separating a cover member 102 that forms the surface of the housing.COPYRIGHT: (C)2012,JPO&INPIT【課題】放射線画像撮影装置におけるフォトタイマの取り付け作業や、内部部品の交換の作業性を改善する。【解決手段】放射線画像撮像装置は、放射線を検出する放射線検出部108と、放射線検出部108を収納する筐体と、線量を測定するためのフォトタイマ受光部107を筐体に固定するフォトタイマ固定部材127と、を有し、フォトタイマ固定部材127は、前記筐体の表面を形成するカバー部材102を分離することでフォトタイマ受光部が取り外し可能となる位置に配置される。【選択図】図1
