Patent ID: 6123078
Filing Date: 2000-09-26
Classification: A61B,G01T,G21K

Abstract:
A gamma ray collimator assembly for use in a cardiac inspection system for resolving energetically unperturbed gamma rays emitted from a patient and for removing inelastic scattered gamma rays, comprising:a plurality of collimator elements with each of said collimator elements having walls and each of said walls defining a plane, each of said walls absorbing said inelastic scattered gamma rays and said walls of each said collimator element defining an elongated longitudinal passageway having open ends through which the energetically unperturbed gamma rays enter and leave and said passageway comprised of a first material layer covered by a second material layer and the planes of said layers being parallel to a central longitudinal axis in each of said collimator elements said first material layer having a large absortion coefficient for said gamma Lays from the patient and said second material layer having a large absorption coefficient for said inelastically scattered gamma rays generated in said first material layer responsive to said gamma rays emitted from said patient.