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Radionuclide Imaging, Computed Tomography, and Gray-Scale Ultrasonography of the Liver: A Comparative Study

Upstate Medical Center, Syracuse, New York

Correspondence: For reprints contact: Zachary D. Grossman, Dept. of Radiology, SUNY Upstate Medical Center, 750 E. Adams St., Syracuse, NY 13210.

ABSTRACT

Transmission computed tomography (CT), gray-scale ultrasonography, and scintillation-camera imaging were compared for detection of intrahepatic space-occupying processes. Fifty patients with suspected liver disease were studied by the three modalities. In the 35 cases with confirmed abnormalities, the modalities were rated on a scale of 0 to 5 in terms of their detection value. Each modality was found to have definite advantages and disadvantages. The mean score of ultrasound was highest (3.61), followed by nuclear medicine (3.11) and then CT (2.77). The combination of ultrasound and nuclear medicine identified all lesions, whereas CT alone or in combination with another technique occasionally failed to detect abnormal foci. In the future, the relative efficacy of these procedures may change with improved imaging technology and increased interpreter experience.