PROBLEM TO BE SOLVED: To provide a radiographic image pickup device capable of more suitable radiation detection.SOLUTION: The radiographic image pickup device comprises: a sensor including a sensing unit in which pixels having conversion elements to convert radiation to electric charges are disposed in matrix form, a drive circuit for driving the sensing unit, and a readout circuit for outputting an electric signal proportionate to electric charges as image data a radiation detection unit for detecting an irradiation state of radiant rays by using two detection units disposed adjacent to each other inside the sensing unit and a control unit for controlling the operation of the drive circuit and readout circuit according to the result of detection by the radiation detection unit. One of the detection units has its detection capability set lower than the detection capability of the other detection unit, so that even when one detection system is saturated, it is possible to detect by the other detection system that irradiation of radiant rays is finished.COPYRIGHT: (C)2014,JPO&INPIT【課題】より好適に放射線検知が可能な放射線撮像装置を提供する。【解決手段】放射線を電荷に変換する変換素子を有する画素が行列状に配置された検出部と、検出部を駆動する駆動回路と、電荷に応じた電気信号を画像データとして出力する読出回路と、を含む検出器と、検出部内に隣接して配置された2つの検知部を用いて放射線の照射状態を検知する放射線検知部と、放射線検知部による検知結果に応じて駆動回路及び読出回路の動作を制御する制御部とを有し、一方の検知部による検知能力を他方の検知部による検知能力よりも低く設定するようにして、1つの検知系が飽和してしまった場合でも、別の検知系で放射線の照射終了を検知することを可能にする。【選択図】図1
