title: Determination of tumour vascularity using selective hepatic angiography as compared with intrahepatic-arterial technetium-99m macroaggregated albumin scan in hepatocellular carcinoma.
abstract: A total of 51 patients with hepatocellular carcinoma (HCC) were studied to determine the tumour vascularity as determined by selective hepatic angiography (HAG) and by intrahepatic-arterial technetium-99m-labeled macroaggregated albumin (Tc99m-MAA) scan. The tumour vascularity was graded on the HAG films by an interventional radiologist using a scale ranging from 1 (hypovascular) to 4 (extremely hypervascular). The grades of vascularity on HAG were grade 1 in 5 patients, grade 2 in 13 patients, grade 3 in 24 patients and grade 4 in 9 patients. The tumour vascularity on scintigraphy was determined by quantifying the count rates over the tumour and normal liver areas by an analog/digital gamma-camera, and the resultant tumour-to-normal ratio (T/N ratio) gave a quantitative measure of the vascularity. The range of the T/N ratio was 0.9 to 11.1, with a median of 3.7. There was no correlation between the tumour vascularity grading on HAG and the T/N ratio on the Tc99m-MAA scan (Wilcoxon rank test, P = 0.83). Thus, we conclude that HAG cannot reveal the true vascularity nor reflect the T/N ratio in HCC.
authors.affiliation: Joint Hepatoma Clinic, Prince of Wales Hospital, Chinese University of Hong Kong.
authors.forename: T W
authors.initials: TW
authors.lastname: Leung
authors.forename: W Y
authors.initials: WY
authors.lastname: Lau
authors.forename: S K
authors.initials: SK
authors.lastname: Ho
authors.forename: M
authors.initials: M
authors.lastname: Chan
authors.forename: N W
authors.initials: NW
authors.lastname: Leung
authors.forename: J
authors.initials: J
authors.lastname: Lin
authors.forename: C
authors.initials: C
authors.lastname: Metreweli
authors.forename: P J
authors.initials: PJ
authors.lastname: Johnson
authors.forename: A K
authors.initials: AK
authors.lastname: Li
mesh_terms: D000792:Angiography; D006528:Carcinoma, Hepatocellular / Q000098:blood supply* / Q000000981:diagnostic imaging; D006801:Humans; D008099:Liver / Q000098:blood supply / Q000473:pathology*; D008113:Liver Neoplasms / Q000098:blood supply* / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin
chemical_list: D013668:Technetium Tc 99m Aggregated Albumin