Items tagged “biliary”

5 results found

Todani classification of bile duct cysts

The Todani classification of bile duct cysts classically divides choledochal cysts into five groups. Classification Traditional classification Type I See: type I choledochal cyst account for 80-90% of all bile duct cysts characterized by fusiform dilation of the extrahepatic bile duct a s...

Type I choledochal cyst

Type I choledochal cysts appear as a fusiform or cystic dilatation of the extrahepatic biliary system (common bile duct +/- common hepatic duct). Epidemiology Although uncommon in Western countries (1:100,000 to 1:150,000), they are the most common type of biliary cyst. Their prevalence may be...

Hepatobiliary imaging in nuclear medicine

Hepatobiliary imaging in nuclear medicine can be accomplished with multiple different radiotracers to help evaluate the liver, gallbladder and the biliary ducts. The choice of tracer depends on the clinical question. Common tracers include: Tc-99m IDA (iminodiacetic acid) analogs: most commonl...

Tc99m IDA (iminodiacetic acid) analogs

Tc99m IDA (iminodiacetic acid) analogs are hepatobiliary agents in nuclear medicine, used in cholescintigraphy. These include: Tc99m-DISIDA: diisopropyl IDA, also known as Hepatolite Tc99m-Mebrofenin: trimethyl bromo IDA, Choletec TM Tc99m-PIPIDA: paraisopropyl iminodiacetic acid The use of...


Cholescintigraphy is the use of radiotracers to assess the anatomy and function of the biliary system (and the liver indirectly). Currently, this is most commonly performed with Tc-99m-IDA analogs, and "hepatic "IDA" imaging gave rise to the more common term "HIDA scan." Indications Cholescint...