Items tagged “biliary”

5 results found

Todani classification of bile duct cysts

The Todani classification of bile duct cysts divides choledochal cysts into five groups. Classification Type I See: type I choledochal cyst account for 80-90% of all bile duct cysts characterised by fusiform dilation of the extrahepatic bile duct a subclassification has been proposed Ia: ...

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. The choice of tracer depends on the clinical question. Common tracers include Tc99m-IDA (iminodiacetic acid) analogues: most commonly used tracer; used for evaluation of the biliary system (e.g....

Tc99m IDA (iminodiacetic acid) analogues

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


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 Tc99m-IDA analogues, and "h"epatic "IDA" imaging gave rise to the more common term "HIDA scan." After intravenous inj...

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