PROBLEM TO BE SOLVED: To provide a high resolution and high intensity radiation detection device in which a substrate, photoelectric conversion elements, and a scintillator are sequentially arranged from a radiation incidence side.SOLUTION: A radiation detection device includes a scintillator 4, a plurality of photoelectric conversion elements 104, and a substrate 2 having a first surface opposed to the scintillator 4 and a second surface opposed to the first surface. The substrate 2, the photoelectric conversion elements 104, and the scintillator 4 are arranged in this order from the side in which radiation of the radiation detection device is made incident. The second surface has: a plurality of recesses 2a located in orthographic projection regions, where the orthographic projections of the plurality of photoelectric conversion elements 104 projected from the side of the scintillator 4 in a direction perpendicular to the substrate 2 are located and protrusions 2b some of which are located in the orthographic projection regions while the others are located between the orthographic projection regions.COPYRIGHT: (C)2012,JPO&INPIT【課題】 基板と光電変換素子とシンチレータとが放射線入射側から順に配置された放射線検出装置において、高解像度で高強度な放射線検出装置を提供する【解決手段】 シンチレータ4と、複数の光電変換素子104と、シンチレータ4と対向する第1表面と該第1表面と対向する第2表面とを有する基板2と、を含む放射線検出装置であって、放射線検出装置の放射線が入射される側から、基板2、光電変換素子104、シンチレータ4の順に配置されており、第2表面は、基板2に垂直な方向にシンチレータ4側から投影された複数の光電変換素子104の正射影が位置する正射影領域に位置する複数の凹部2aと、一部が正射影領域内に位置し、一部を除く他の部分が正射影領域の間に位置する凸部2bと、を有する。【選択図】 図1
