PROBLEM TO BE SOLVED: To provide a radiation imaging system which reliably performs X ray coordination without exposing a subject to unnecessary X ray radiation, even in the case of a wireless communication failure.SOLUTION: A radiation imaging apparatus F comprises: an imaging panel 22 on which a plurality of pixels 220a constituted of at least a detecting element and a switching element are two dimensionally arranged imaging control means 30 capable of controlling a conduction state of the switching elements in such a way that the switching elements are in the conduction state in units of rows and switching elements of a plurality of discontinuous rows are in the conduction state at the same time and irradiation detecting means 220b for detecting an irradiation start or an irradiation termination of radiation on the basis of electric charge read through the switching elements of the plurality of discontinuous rows. The imaging control means 30 exerts control to change a state of the detecting elements on the basis of the detection of the irradiation start or the irradiation termination by the irradiation detecting means 220b.COPYRIGHT: (C)2014,JPO&INPIT【課題】無線通信が失敗した場合においても、X線連携を確実に行い、被検体に無駄なX線放射を行うことがない放射線撮像システムを提供する。【解決手段】放射線撮像装置Fは、少なくとも検出素子とスイッチング素子とで構成される複数の画素220aが2次元配置された撮像パネル22と、スイッチング素子を行単位で導通状態とし、かつ不連続な複数の行のスイッチング素子が同時に導通状態にあるように、スイッチング素子の導通状態を制御することが可能な撮像制御手段30と、不連続な複数の行のスイッチング素子を介して読み出された電荷に基づいて放射線の照射開始又は照射終了を検知する照射検知手段220bとを有し、撮像制御手段30は、照射検知手段220bの照射開始又は照射終了の検知に基づき、検出素子の状態を変更するよう制御する。【選択図】図2
