PROBLEM TO BE SOLVED: To provide a radiographic imaging apparatus capable of adequately preventing the erroneous detection of the irradiation start of a radiation due to vibration etc. to be generated in the apparatus, the change of a load to be added, and an electromagnetic wave etc. that has entered a housing.SOLUTION: A radiographic imaging apparatus 1 includes: a detection unit P having multiple scan lines 5 and signal lines 6 and two-dimensionally arrayed multiple radiation detection elements 7 control means 22 for detecting the irradiation start of a radiation on the basis of data dleak etc. read by reading circuits 17 a noise detection line 50 arranged inside the detection unit P and noise detection means 51 connected to the noise detection line 50. The control means 22 determines whether the irradiation of a radiation has been started or not and the irradiation start of the radiation has been erroneously detected or not on the basis of a signal value Sg detected by the noise detection means 51 and the data dleak when the data dleak etc. becomes equal to or more than a threshold dleak th etc.COPYRIGHT: (C)2014,JPO&INPIT【課題】装置に生じる振動等や加わる荷重の変動や筐体内に入り込んだ電磁波等によって放射線の照射開始の誤検出が生じることを的確に防止することが可能な放射線画像撮影装置を提供する。【解決手段】放射線画像撮影装置1は、複数の走査線5や信号線6と、二次元状に配列された複数の放射線検出素子7とを備える検出部Pと、読み出し回路17で読み出されたデータdleak等に基づいて放射線の照射開始を検出する制御手段22と、検出部P内に配置されたノイズ検出線50と、ノイズ検出線50に接続されたノイズ検出手段51とを備え、制御手段22は、データdleak等が閾値dleak_th等以上になった時点でノイズ検出手段51で検出された信号値Sgとデータdleakとに基づいて、放射線の照射が開始されたか放射線の照射開始を誤検出したかを判断する。【選択図】図9
