To achieve improvement in quality of a radiation detection device with a comparatively simple configuration.SOLUTION: A radiation detection device comprises: a sensor substrate that has a plurality of sensor parts for detecting radiation arrayed in a prescribed direction； a support member that supports the sensor substrate； an end part of the support member in an array direction of the plurality of sensor parts； and a radiation shield member that is arranged between the end part and the sensor substrate.SELECTED DRAWING: Figure 1【課題】放射線検出装置の品質の向上を比較的簡素な構成で実現する。【解決手段】放射線検出装置は、放射線を検出するための複数のセンサ部が所定方向に配列されたセンサ基板と、前記センサ基板を支持する支持部材と、前記複数のセンサ部の配列方向における前記支持部材の端部と、該端部と前記センサ基板との間に配置された放射線遮蔽部材と、を備える。【選択図】図１
