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An Optimized Collimator for Single-Photon Computed Tomography with a Scintillation Camera

University of Michigan Medical Center, Ann Arbor, Michigan

Correspondence: For reprints contact: John W. Keyes, Jr., Div. of Nuclear Medicine, University Hospital, Ann Arbor, MI 48109.

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 has a calculated full width at half maximum of 1 cm at 15 cm in front of the collimator. When this collimator is used in conjunction with averaged opposed views, excellent uniformity across the reconstruction plane is achievable.