title: 99mTc-PI as safe and easy scintigraphy after hepatectomy.
abstract: Hepatobiliary scintigraphy with 99mTc-PI was performed on 16 patients after various types of hepatectomy for either primary or secondary liver tumor. 99mTc-PI scintigraphy was found very useful, especially in regard to clinical evaluation of indistinct low-uptake areas observed on a 99mTc colloid liver scintigram in the regenerating liver after hepatectomy. Both tests were conducted successively within a couple of weeks. Colloid scintigrams after hepatectomy were divided into two groups according to the sites of indistinct low-uptake areas; one showed them near the resected margin of the regenerating liver (Type I), and the other showed them in both marginal and intrahepatic. regions (Type II). Of these 16 patients, 8 showed Type I and 7 showed Type II. The remaining one was excluded for postsurgical complications. By comparing the colloid scintigram with the 99mTc-PI scintigram, in all the cases of Type I indistinct low-uptake areas were found to be the hilum with a shifted common bile duct. On the other hand, in 2 cases of Type II indistinct low-uptake areas were caused by the hilum accompanied by the dilated bile ducts. In the remaining 5, indistinct low-uptake areas were not identified as bile ducts but were confirmed to be a recurrence of the tumor.
mesh_terms: D000328:Adult; D000368:Aged; D001652:Bile Ducts / Q000000981:diagnostic imaging*; D002276:Carcinoid Tumor / Q000000981:diagnostic imaging; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D005260:Female; D006391:Hemangioma / Q000000981:diagnostic imaging; D006498:Hepatectomy; D006801:Humans; D007532:Isoleucine / Q000031:analogs & derivatives*; D007890:Leiomyosarcoma / Q000000981:diagnostic imaging; D008099:Liver / Q000000981:diagnostic imaging*; D008113:Liver Neoplasms / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D011184:Postoperative Period; D011730:Pyridoxal / Q000031:analogs & derivatives*; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D015609:Organotechnetium Compounds; C016707:technetium Tc 99m pyridoxylideneisoleucine; D007532:Isoleucine; D011730:Pyridoxal; D013667:Technetium