Thallium-201/Technetium-99m-Phytate (Colloid) Subtraction Imaging of Hepatocellular Carcinoma

This paper evaluates the clinical usefulness of 201 Tl to image hepatocellular cacinoma (HCC), using 201 Tl, 99m Tc-phytate (colloid) and a three-headed SPECT camera. methods: The tumor-to-nontumor ratios (TM) of 201 Tl for different categories of HCC were generated. Tumors were emphasized by image subtraction ( 201 Tl- 99m Tc-colloid). Thirty-three lesions in 16 patients (18 studies) with HCC were evaluated. There were 19 untreated nodular, five untreated diffuse, five local recurrent and four necrotic lesions after interventional therapy