PROBLEM TO BE SOLVED: To provide a mechanism capable of obtaining a high quality radiation image by suppressing image unevenness caused by processing of each signal processing unit.SOLUTION: The radiation imaging apparatus comprises: an effective pixel area 121 composed of a plurality of detection areas A(1211) to E(1215) and provided with a first pixel including a photoelectric conversion element 12101 and a second pixel including a light shielding element 12102 for each detection area； a plurality of signal processing units 1231 to 1235 provided corresponding to the detection areas A(1211) to E(1215) and processing output signals of the first pixel and the second pixel provided in the detection area, for each detection area； and a correction unit which, for each of the signal processing units of the plurality of the signal processing units 1231 to 1235, corrects the output signal of the first pixel processed by the signal processing unit, by using the output signal of the second pixel processed by the signal processing unit.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】各信号処理部の処理によって生じる画像ムラを抑制して高画質の放射線画像を取得できる仕組みを提供する。【解決手段】複数の検出領域Ａ（１２１１）～Ｅ（１２１５）から構成され、検出領域ごとに光電変換素子１２１０１を含む第１の画素と光遮蔽素子１２１０２を含む第２の画素とが設けられた有効画素領域１２１と、複数の検出領域Ａ（１２１１）～Ｅ（１２１５）に対応して設けられ、検出領域ごとに当該検出領域に設けられた第１の画素及び第２の画素の出力信号を処理する複数の信号処理部１２３１～１２３５と、複数の信号処理部１２３１～１２３５における信号処理部ごとに、当該信号処理部で処理した第１の画素の出力信号を、当該信号処理部で処理した第２の画素の出力信号を用いて補正する補正部を備える。【選択図】図２
