PROBLEM TO BE SOLVED: To avoid damage to substrates due to the contact between the substrates even if deflection occurs and prevent influence on an image quality between the substrates in a radiation imaging device using a plane detector.SOLUTION: A radiation imaging device 100 comprises: a plane detector 200 that includes a plurality of photoelectric conversion element substrates 202, a base 205 supporting these photoelectric conversion element substrates 202 on a first surface 206, and a scintillator 201 provided on opposite surfaces of the photoelectric conversion element substrates 202 to surfaces supported by the base 205 and a casing 101 in which the plane detector 200 is arranged, and the radiation imaging device 100 further comprises reinforcement members 105 arranged to be superimposed on all clearance regions formed between the adjacent photoelectric conversion element substrates 202 and part of the photoelectric conversion element substrates 202 adjacent to the clearance regions in a plan view from a direction perpendicular to the first surface 206, for reinforcing part of the plane detector 200.COPYRIGHT: (C)2015,JPO&INPIT【課題】平面検出器を用いた放射線撮影装置において、撓みが発生しても基板どうしの接触による破損を回避し、基板間の画質に影響を及ぼさないようにする。【解決手段】放射線撮影装置100は、複数の光電変換素子基板202と、これら複数の光電変換素子基板202を第1表面206に支持するベース205と、光電変換素子基板202のベース205の側とは反対側の面に設けられるシンチレータ201と、を含む平面検出器200と、この平面検出器200が内部に配置される筺体101とを有し、さらに、第1表面206に垂直な方向から見た平面視において隣接した光電変換素子基板202によって形成される全ての隙間領域と隙間領域に隣接する光電変換素子基板202の一部とに重畳して配置され、平面検出器200の一部を補強する補強部材105を有する。【選択図】図2
