Transmission-Emission Scanning: An Aid in Detecting Space Occupying Lesions of the Left Upper Quadrant

Abstract

Five cases are presented in which lesions affecting the spleen were suspected either clinically or on routine ^99mTc-sulfur colloid liver scans. Using ^99mTc, transmissionemission scans were performed on these patients; these scans were all abnormal. Subsequent diagnostic studies confirmed three real lesions. The other two patients had intrathoracic abnormalities producing the abnormal scans. The technique, advantages, and limitations of transmission-emission scanning for detecting space-occupying lesions of the left upper quadrant area are discussed.