Patent ID: 8735841

Claim:
A radiological image detection apparatus comprising: a scintillator which is formed out of a group of columnar crystals in which crystals of a fluorescent material emitting fluorescence when irradiated with radiation have grown into columnar shapes; and a photodetector which is provided on a radiation entrance side of the scintillator and which detects the fluorescence emitted by the scintillator as an electric signal; wherein: a high activator density region whose activator density is higher than activator density of a region on an opposite side to the radiation entrance side in the scintillator is provided and disposed on the photodetector side in the scintillator; and a low activator density region whose activator density is lower than the activator density of the high activator density region is provided in a position closer to the photodetector than the high activator density region in the scintillator.