PROBLEM TO BE SOLVED: To reduce an impact by crosstalk with respect to a signal from an element detecting radiation.SOLUTION: A radiation imaging device 200 has: a first detection element 121 and second detection element 301； a read unit 140 that reads a signal appearing in a first signal line 125 and a second signal line 305； a reset unit that resets potential between the first and second signal lines； and a signal processing circuit 224 that processes the read signal. A first conversion element 122 to radiation and a second conversion element 302 thereto are different in sensitivity. A period in which the read unit 140 reads the signal includes: a first period in which the signal is not read in a state where a first switch 123 and a second switch 303 are non-conductive after resetting the signal line； and a second period that includes an action in which the signal appearing in the signal line is respectively read after the first switch and the second switch are conductive after reset. The signal processing circuit is configured to correct the signal read from the first signal line in the second period on the basis of the signal read from the second signal line in the first and second periods.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】放射線を検出する素子からの信号に対するクロストークによる影響を低減する。【解決手段】放射線撮像装置２００は、第１検出素子１２１と第２検出素子３０１と、第１信号線１２５及び第２信号線３０５に現れる信号を読み出す読出部１４０と、第１及び第２信号線の電位をリセットするリセット部と、読み出された信号を処理する信号処理回路２２４とを有する。放射線に対する第１変換素子１２２と第２変換素子３０２の感度は異なる。読出部１４０が信号を読み出す期間は、信号線をリセット後に第１スイッチ１２３及び第２スイッチ３０３が導通しない状態で信号が読み出される第１期間と、リセット後に第１及び第２スイッチが導通した後に信号線に現れる信号がそれぞれ読み出される動作とを含む第２期間とを含む。信号処理回路は、第１および第２期間に第２信号線から読み出された信号に基づいて第２期間に第１信号線から読み出された信号を補正する。【選択図】図１
