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Evaluation of Three Imaging Instruments in Dogs with Liver Hematomas: Concise Communication

University of Minnesota Hospitals, Minneapolis, Minnesota

Correspondence: For reprints contact: Mathis Frick, Div. of Nuclear Medicine, Dept. of Radiology, University Hospitals, Box 382, Mayo Memorial Bldg., 420 Delaware St., S.E., Minneapolis, MN 55455.

ABSTRACT

Single-gamma emission computerized tomography (ECT) was compared with transmission computerized tomography (TCT) and scintillation-camera imaging (SC) in eight dogs with acute, solitary hematomas in the left liver lobe. The superior performance of TCT was attributed to its inherently better spatial resolution than those of ECT or SC, and to the fact that studies with TCT could be performed during apnea. ECT was more sensitive than SC to small changes in the spatial distribution of radionuclides. In addition, the ECT, by virtue of its sectioning capability, was more sensitive than is SC to differences in radionuclide concentrations at same depth in an organ.