PROBLEM TO BE SOLVED: To enable an increased possibility of increasing white defect parts in a radiation image to be detected before a clear increase tendency occurs in the white defect parts in the radiation image as an adhesion member deteriorates with time.SOLUTION: When a scintillator which has a columnar crystal structure, absorbs irradiated radiation, and emits light and a light detection part which detects the light emitted from the scintillator as a radiation image are stuck with each other via an adhesion member, a cavity generated in a close contact surface (a first close contact surface) between the scintillator and the adhesion member occurs as a white defect part on the radiation image, while a cavity generated in a close contact surface (a second close contact surface) between the light detection part and the adhesion member occurs as a black defect part on the radiation image. Because the white defect part has greater influence, the adhesion strengths of the first and second close contact surfaces are set such that the generation of cavities with the time degradation of the adhesion member progresses in the second close contact surface more than in the first close contact surface.COPYRIGHT: (C)2012,JPO&INPIT【課題】密着部材の経時劣化に伴って放射線画像中の白欠陥部に明確な増加傾向が現れる前に、放射線画像中の白欠陥部が増加する可能性が高くなったことを検知することが可能とする。【解決手段】柱状結晶構造部を有し照射された放射線を吸収して光を射出するシンチレータと、シンチレータから射出された光を放射線画像として検出する光検出部と、を密着部材を介して貼り合わせた場合、シンチレータと密着部材との密着面(第1の密着面)に発生した空隙は放射線画像上に白欠陥として現れ、光検出部と密着部材との密着面(第2の密着面)に発生した空隙は放射線画像上に黒欠陥として現れる。白欠陥の方が影響が大きいため、密着部材の経時劣化に伴う空隙の発生が第1の密着面内よりも第2の密着面内で進行するように、第1の密着面の密着力及び第2の密着面の密着力を設定する。【選択図】図1
