Patent ID: 8448327
Filing Date: 2013-05-28
Classification: A61B,G01T,Y10T

Abstract:
1. A method of manufacturing radiation tomography apparatus having an annular detector ring, the detector ring having detector arrays in a ring shape with each of radiation detectors arranged in a first direction in which a scintillator provided with scintillation counter crystal layers that is formed of scintillation counter crystals that convert radiation into fluorescence are arranged two-dimensionally in the first direction and a second direction as vertical and horizontal directions, a light guide that receives fluorescence, and a light detector that detects fluorescence are laminated in a height direction, comprising: a preliminary arranging step of arranging a first radiation detector and a second radiation detector in the first direction and selects a spacer such that clearance in the first direction between a first scintillator provided in the first radiation detector and a second scintillator provided in the second radiation detector corresponds to integral multiples of an arrangement pitch of the scintillation counter crystal in the first direction; a first spacer joining step of joining the spacer so as to cover a side surface of a first light detector provided in the first radiation detector that faces the first direction thereof; a second spacer joining step of arranging the first radiation detector and the second radiation detector again in the first direction to align both radiation detectors in the second direction such that the first scintillator is same as the second scintillator in position in the second direction, and joining the spacer to a side surface of a second light detector provided in the second radiation detector to manufacture the detector array extending in the first direction; and a detector ring forming step of forming the detector ring by arranging the detector arrays annularly.