To provide a mechanism capable of improving mechanical strength, in a radiation imaging apparatus in which a scintillator is arranged in a recess formed in a substrate.SOLUTION: A radiation imaging apparatus includes a sensor substrate 101 in which a plurality of pixels for converting light into an electrical signal are provided on a first surface 102 located on a side on which radiation 401 is made incident and a recess 104 is provided in a second surface 103 located on the side opposite to the first surface 102, a scintillator 111 which is provided in the recess 104 and converts the radiation 401 into the light, and a substrate 113 which is adhered to the second surface 103 of the sensor substrate 101 and the scintillator 111 through an adhesive layer 112.SELECTED DRAWING: Figure 2【課題】基板に形成された凹部にシンチレータを配置する放射線撮像装置において、機械的強度の向上を実現する仕組みを提供する。【解決手段】放射線４０１が入射する側に位置する第１の面１０２に、光を電気信号に変換する画素が複数設けられており、第１の面１０２とは反対側に位置する第２の面１０３に凹部１０４が設けられたセンサ基板１０１と、凹部１０４に設けられ、放射線４０１を光に変換するシンチレータ１１１と、センサ基板１０１の第２の面１０３及びシンチレータ１１１に対して、接着層１１２を介して接着された基板１１３を備える。【選択図】図２
