COMPUTERIZED DOUBLE-TRACER SUBTRACTION SCANNING WITH GA-67 CITRATE IN INFLAMMATORY DISEASES

  • 1 January 1978
    • journal article
    • research article
    • Vol. 19  (12) , 1297-1300
Abstract
A Ga-67/Tc-99m subtraction technique was used with a variable weighting factor. Each image was separately set to 100%. Varying amounts of the Tc-99m images were subtracted from those of Ga-67. A total of 95 patients who had radiogallium scanning for suspected inflammatory disease were studied by the subtraction technique. Of these patients 30 had abnormal Tc-99m pyrophosphate bone scans, while 20 had abnormal radiogallium abdominal foci; 45 had defects in liver, spleen or kidney images. The subtraction technique with variable weighting was highly successful in enhancing hot-spot visibility, and providing information as to the anatomic location of the defect.