PROBLEM TO BE SOLVED: To image photographic images in the state where a radiation source and a radiation detector keep a suitable relationship.SOLUTION: A radiographic imaging apparatus is equipped with the radiation source, the radiation detecting part for detecting radiation transmitted through a subject, a signal detecting part for detecting signals from a plurality of signal generating parts provided respectively in different positions on the radiation detecting part, a signal comparing part for comparing the signals detected by the signal detecting part, a positional relationship determining part for determining whether the positional relationship between the radiation detecting part and the radiation source have a prescribed relationship from the result of the comparison, a position controlling part for keeping the positional relationship in the prescribed relationship by controlling at least one of the positions of the radiation source and the radiation detecting part from the result of the determination, a position control suppressing part for suppressing the controlling of the positions of the radiation source and the radiation detecting part by the position control part after bringing the positional relationship in the prescribed positional relationship, and an informing part for informing of the status that the positional relationship deviates from the prescribed positional relationship when the positional relationship determining part determines during the suppression performed by the position control suppressing part.COPYRIGHT: (C)2009,JPO&INPIT【課題】放射線源及び放射線検出器が適切な位置関係にある状態で放射線画像を撮像すること。【解決手段】放射線撮像装置は、放射線源と、被検者を透過した放射線を検出する放射線検出部と、放射線検出部の互いに異なる位置に設けられた複数の信号発生部からの信号を検出する信号検出部と、信号検出部が検出した信号を比較する信号比較部と、比較結果に基づき放射線検出部と放射線源との間の位置関係が所定の位置関係にあるか否かを判断する位置関係判断部と、当該判断結果に基づき、放射線源及び放射線検出部の少なくとも一方の位置を制御して、当該位置関係を所定の位置関係に維持する位置制御部と、位置関係を所定の位置関係にさせた後に、位置制御部が放射線源及び放射線検出部の位置を制御することを抑制する位置制御抑制部と、当該抑制している間に、位置関係が所定の位置関係にない旨を位置関係判断部が判断した場合に報知する報知部とを備える。【選択図】図2
