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  • Title: Scintigraphic criteria for the diagnosis of obstructive hepatobiliary diseases with Tc-99m IDA.
    Author: Krishnamurthy S, Krishnamurthy GT, Lieberman D, Keeffe EB.
    Journal: Clin Nucl Med; 1988 Oct; 13(10):704-9. PubMed ID: 3180595.
    Abstract:
    The purpose of this study is to define the scintigraphic parameters that reliably predict the presence of obstructive hepatobiliary diseases. Gallbladder and intestinal visualization times noted during cholescintigraphy with Tc-99m IDA were compared to functional and morphologic parameters for their ability to accurately diagnose biliary diseases. One hundred and twenty-five normal subjects and 127 patients with five different types of hepatobiliary diseases were studied. Bile pooling in segmental ducts with minimal prolongation of excretion t-1/2 was the feature most commonly seen in partial common bile duct obstruction, and biliary nonvisualization with marked prolongation of excretion t-1/2 was the primary feature of total obstruction. Sclerosing cholangitis showed band constrictions and beading along bile ducts with regional variation in excretion t-1/2, and primary biliary cirrhosis demonstrated normal bile ducts with uniform prolongation of excretion t-1/2. Patients with cholelithiasis showed normal image patterns of the major ducts. Intestinal visualization by 60 minutes was only 46% sensitive and 77% specific with an overall accuracy of 74% in the detection of biliary obstruction. Delayed gallbladder visualization and reduction in ejection fraction were sensitive but nonspecific indicators of biliary disease. We conclude that Tc-99m-IDA imaging is an accurate test for the diagnosis of obstructive hepatobiliary disease provided both quantitative functional and qualitative morphologic parameters are analyzed. Intestinal nonvisualization at 60 minutes alone is not reliable as a sole parameter for the detection of partial biliary obstruction.
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