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  • Title: Liver and gall-bladder imaging with technetium-99m dihydorthioctic acid and technetium-99m pyridoxylidene glutamate-a study in the young pig.
    Author: Jenner RE, Clarke MB, Howard ER.
    Journal: Br J Radiol; 1976 Oct; 49(586):852-7. PubMed ID: 788827.
    Abstract:
    Seventeen scans on ten young pigs were performed after injection of Technetium-99m labelled dihydrothioctic acid (99Tcm-DHT) and Technetium-99m labelled pyridoxylidene glutamate (99Tcm-PG) using a gamma-camera. Sequential images of the liver, gall-bladder and intestine were observed in all healthy animals. 99Tcm-DHT produced the clearer liver images, whereas 99Tcm-PG produced more rapid and intense gall-bladder images. Analysis of hepatic bile in three animals also suggested a more rapid and higher concentration of 99Tcm-PG than 99Tcm-DHT (36% vs. 4% of the injected dose over two hours). Bowel images were not seen in an animal that had undergone exicision of the extrahepatic biliary tract, but scans performed after hepaticojejunostomy demonstrated intestinal transit of isotope. This study shows that the hepatobiliary system can be easily imaged using Technetium-99m labelled compounds which are excreted into bile. These agents may be useful in the diagnosis of obstructive lesions of the extrahepatic biliary tract of adults and infants.
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