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Converging Collimation and a Large-Field-of-View Scintillation Camera

Baylor College of Medicine and St. Luke's Episcopal—Texas Children's Hospitals, Houston, Texas
Searle Radiographics, Des Plaines, Illinois

Correspondence: For reprints contact: John A. Burdine, Dept. of Radiology, Baylor College of Medicine, Houston, Tex. 77025.

ABSTRACT

Three low-energy multihole converging collimators were evaluated in reference to accepted imaging parameters using a prototype large-field-of-view scintillation camera. A substantial improvement in resolution and/or sensitivity with depth was observed. Because of the large detector, the inherent reduction in field size due to convergence was not detrimental to satisfactory imaging of most target volumes. Such collimation should prove to be of significant clinical value.