Patent ID: 8139717
Filing Date: 2012-03-20
Classification: G21K

Abstract:
1. A secondary collimator comprising: a plurality of plates each comprising a plurality of elongated septa defining a plurality of elongated slits extending along a width of a respective plate of said plurality of plates; and a base plate defining a plurality of slots each configured to receive one plate of said plurality of plates, said plurality of slots spaced apart by at least one gap thickness determined based on at least one dimension of said plurality of plates, said base plate coupled to said plurality of plates such that the elongated slits of each plate of said plurality of plates are substantially parallel to the elongated slits of other plates of said plurality of plates, wherein the at least one gap thickness comprises a first gap thickness g where F is a tolerance factor a is a thickness of each plate, W 1 is a width of each slit of said plurality of slits of each said plate, and P is a pitch of each plate.