OPTIMIZED COLLIMATOR FOR SINGLE-PHOTON COMPUTED TOMOGRAPHY WITH A SCINTILLATION CAMERA

Abstract

The problem of nonuniform response, which is inherent in scintillation-camera emission computed tomography, can be minimized by proper collimator design. A specially fabricated collimator, optimized for emission computed tomography, was designed. This collimator had a calculated full width at half maximum of 1 cm at 15 cm in front of the collimator. When this collimator was used in conjunction with averaged opposed views, excellent uniformity across the reconstruction plane was achievable.