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  • Title: Utility of technetium-99m-labeled-galactosyl human serum albumin scintigraphy for estimating the hepatic functional reserve.
    Author: Fujioka H, Kawashita Y, Kamohara Y, Yamashita A, Mizoe A, Yamaguchi J, Azuma T, Furui J, Kanematsu T.
    Journal: J Clin Gastroenterol; 1999 Jun; 28(4):329-33. PubMed ID: 10372930.
    Abstract:
    Technetium-99m-diethylenetriaminepentaacetic acid-galactosyl-human serum albumin (Tc-GSA) is a receptor binding agent, specific for asialoglycoprotein receptor, that resides exclusively on the plasma membrane of mammalian hepatocytes. The usefulness of Tc-GSA for estimating the hepatic functional reserve was retrospectively evaluated in patients undergoing a hepatic resection. Tc-GSA scintigraphy was performed in 35 patients before hepatectomy, and the hepatic uptake ratio (LHL15) was calculated. The LHL15 was then compared with the findings of conventional liver function tests, the indocyanine green retention rate in 15 minutes (ICG R15), and histologic activity index (HAI) score. Significant correlations were observed between the LHL15 and values of ICG R15, prothrombin time activity, serum levels of total bilirubin, hyaluronic acid, and values of HAI score. Ratios of LHL15 to preoperative liver volume (LHL-V) correlated well with the regenerative rates of the residual liver after major hepatectomy. In addition, patients with more than 0.76 of LHL-V value had no complications in postoperative course, whereas those with less than 0.73 had several complications due to hepatic dysfunction. Tc-GSA scintigraphy thus appears to be a useful diagnostic tool for evaluating functioning mass of the liver and the values of LHL-V seems to be able to demonstrate regenerative activity in the residual liver after hepatectomy.
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