| 摘要 |
PROBLEM TO BE SOLVED: To highly accurately and highly efficiently perform the positioning of a collimator module.SOLUTION: A radiation detection device has a basic structure having a pair of rails disposed with an interval in a slice direction, and extended in parallel with a channel direction and a plurality of collimator modules arrayed along the channel direction at the radiation outlet side of the rails. At least one of the rails has a flat surface which is in parallel with the radiation direction, and a positioning plate is fixed to the flat surface, and the positioning plate is extended in the channel direction, and the positioning plate has a plurality of notches formed along the radiation outlet side. Each collimator module has positioning pins protruded toward a radiation incidence side, and the positioning pins are fitted into the notches of the positioning plate such that the collimator module is attached to the rail by screws or the like. |
