Patent ID: 8294108
Filing Date: 2012-10-23
Classification: G01T

Abstract:
1. A radiation detector comprising a scintillator to convert radiation emitted from a radiation source into fluorescence; and a fluorescence detection device to detect fluorescence from the scintillator, the scintillator being composed of scintillation counter crystal layers having scintillation counter crystals in a block shape arranged in two dimensions so as to be laminated in a direction toward the fluorescence detection device; the scintillation counter crystal layer having two or more first reflectors that are inserted between the scintillation counter crystals so as to be parallel to one another; the scintillation counter crystal layer further having two or more second reflectors that are perpendicular to the first reflectors and are inserted between the scintillation counter crystals so as to be parallel to one another; the scintillator having at least a first scintillation counter crystal layer and a second scintillation counter crystal layer having more first reflectors than the first scintillation counter crystal layer; and a gap between the first reflectors adjacent to each other provided in the first scintillation counter crystal layer being wider than that between the first reflectors adjacent to each other provided in the second scintillation counter crystal layer such that an overall width of the first scintillation counter crystal layer in an arranging direction of the first reflectors is identical to an overall width of the second scintillation counter crystal layer in the arranging direction.