title: PIPIDA excretory scintigraphy in the diagnosis of hepatobiliary disorders.
abstract: The diagnostic accuracy of hepatobiliary radionuclide imaging using 99mTC-labeled para-isopropyl acetanilido-iminodiacetic acid (99mTc-PIPIDA) in patients with hepatobiliary disorders was assessed in 50 patients. Thirty of the study group were jaundiced; the remaining 20 had other clinical features suggestive of some hepatobiliary disorder. The findings using PIPIDA proved to be correct in 22 (73%) of the 30 jaundiced patients and in 18 (90%) of 20 patients without jaundice. There appears to be a close relationship between the diagnostic accuracy of the test and the level of serum bilirubin. Thus, the diagnosis indicated by the PIPIDA test was correct in 30 (88%) of 34 patients in whom the serum bilirubin was less than 5 mg./dl. but only in 10 (62%) of 16 patients whose serum bilirubin exceeded 5 mg./dl. It is concluded from these observations that: 1. PIPIDA is diagnostically useful in the evaluation of hepatobiliary disorders, especially when the serum bilirubin is less than 5 mg./dl. and 2. the accuracy of this test is not absolute and the findings are not always definitive.
mesh_terms: D000328:Adult; D000368:Aged; D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging*; D001663:Bilirubin / Q000097:blood; D005260:Female; D006801:Humans; D007098:Imino Acids; D007565:Jaundice / Q000150:complications; D008107:Liver Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D007098:Imino Acids; D015609:Organotechnetium Compounds; D013667:Technetium; C003693:technetium Tc 99m PIPIDA; D001663:Bilirubin