PROBLEM TO BE SOLVED: To provide a technology that is advantageous for acquiring an energy subtraction image by single irradiation with radiation using two radiation imaging panels for a radiation detecting device.SOLUTION: The radiation detecting device includes: a housing a first radiation imaging panel and a second radiation imaging panel disposed in the housing while being superposed each other and a radiation absorption part disposed between the first radiation imaging panel and the second radiation imaging panel. The radiation absorption part contains an absorption member of which K absorption end energy is present as 40 keV or more and 60 keV or less.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】放射線検出装置において、2つの放射線撮像パネルを用い、1回の放射線の照射でエネルギサブトラクション画像を取得するために有利な技術を提供する。【解決手段】筐体と、筐体の中に重ねて配された第1の放射線撮像パネル及び第2の放射線撮像パネルと、第1の放射線撮像パネルと第2の放射線撮像パネルとの間に配された放射線吸収部と、を含む放射線検出装置であって、放射線吸収部は、K吸収端のエネルギが40keV以上かつ60keV以下に存在する吸収部材を含む。【選択図】図1
