Biliary Scan using 99mTc DIDA (Diethylacetanilide-IDA)
Indications
Suspected acute cholecystitis. Evaluation of jaundice (adjunctive procedure). Evaluation of recurrent jaundice and pain post biliary surgery. Evaluation of biliary-enteric anastomosis. Detection of post-op leaks. Evaluation of enterogastric reflux. Evaluation of small bowel transit time.
In patients with suspected cholecystitis, if gallbladder fails to visualise within 40 minutes, a small dose of morphine (0.04mg/Kg = 2.8mg/70Kg) is given I.V. to prompt filling of the gallbladder by contraction of the sphincter of Oddi. The study is completed within 80 min. Gallbladder emptying can be investigated after a fatty meal.
For evaluation of jaundice late up to 24 hours views are required.
52 yo man with upper abdominal pain. Prompt filling of gallbladder on biliary scan.
Normal GB emptying. Normal study.