The preparation of 99mTc-NGA hepatocellular receptor imaging and its preclinical study in rabbits

Technetium-99 galactosyl-neoglycoalbumin (99mTc-NGA) is a new hepatocellular receptor imaging ligand. Its preparation and preclinical research are reported. The ligand was synthesized by the chemical coupling and the product was nontoxic and apyrogenic with good stability both in vivo and in vitro. The static images and kinetic data obtained from the liver portal vein ligation group (n = 2), the hepatic necrosis group (n = 2) and the control group (n = 6) indicate: (1)99mTc-NGA imaging can provide excellent hepatic images, and (2) hepatic kinetic data appear to provide a new means for diagnosis of liver diseases