PROBLEM TO BE SOLVED: To provide a radiation imaging device capable of performing at least two detections of the irradiation start and completion of radiation and the irradiation quantity of radiation while suppressing the lowering of image quality as the whole of a photographed image, and to provide a radiation imaging system and a radiation detection program.SOLUTION: A plurality of sensor parts 146 for detecting respective emitted radiations are arranged so as to be overlapped with the photographing region of a radiation detector 60 for photographing a radiation image due to the radiation emitted to the photographing region and used properly to perform at least two detections of the irradiation start and completion of radiation and the irradiation quantity of radiation.COPYRIGHT: (C)2012,JPO&INPIT【課題】撮影される画像全体としての画質の低下を抑えつつ、放射線の照射開始、放射線の照射終了、及び放射線の照射量の少なくとも2つの検出を行うことができる放射線撮影装置、放射線撮影システム、及び放射線検出プログラムを提供する。【解決手段】撮影領域に照射された放射線による放射線画像を撮影する放射線検出器60の撮影領域に重なるように各々照射された放射線を検出する複数のセンサ部146を配置し、複数のセンサ部146を使い分けて放射線の照射開始、放射線の照射終了、及び放射線の照射量の少なくとも2つの検出を行う。【選択図】図7
