Two-dimensional collimator module, X-ray detector, X-ray CT apparatus, and method for assembling two-dimensional collimator module

摘要

A two-dimensional collimator module is provided. The two-dimensional collimator module includes first collimator plates arranged in a channel direction, second collimator plates arranged in a slice direction and combined with the first collimator plates to form a lattice, and a first block and a second block that hold the first collimator plates, wherein each of the first collimator plates is formed with slits, each of the second collimator plates is inserted through an associated row of the slits, first plate surfaces of the second collimator plates in the slice direction abut only first wall surfaces of first and second wall surfaces of the slits in the slice direction in a first set of the first collimator plates, and second plate surfaces of the second collimator plates opposite to the first plate surfaces abut only the second wall surfaces of the slits in a second set of first collimator plates.

主权项

1. A two-dimensional collimator module, comprising:
a plurality of first collimator plates arranged in a channel direction; a plurality of second collimator plates arranged in a slice direction and combined with the plurality of first collimator plates to form a lattice; and a first block and a second block that hold the plurality of first collimator plates placed therebetween in the slice direction, wherein each of the plurality of first collimator plates is formed with a plurality of slits each extending along a direction of radiation emitted from an X-ray focal spot and arranged in the slice direction, each of the plurality of second collimator plates is inserted through an associated row of the slits in the plurality of first collimator plates, first plate surfaces of the second collimator plates in the slice direction abut only first wall surfaces of first and second wall surfaces of the slits in the slice direction in a first set of the plurality of first collimator plates, and second plate surfaces of the second collimator plates opposite to the first plate surfaces abut only the second wall surfaces of the slits in a second set of the plurality of first collimator plates separate from the first set.