HIDA scan also known as Cholescintigraphy or commonly known as gallbladder scan is a non-invasive nuclear imaging tool is used to assess functions of gall bladder and liver.
This procedure uses a radioactive tracer (Technetium) which is injected in vein. The tracer is then taken up by bile producing cells of liver from the blood stream and is excreted with bile into the gall bladder via bile duct and eventually into small intestine.
HIDA scan is used to track the flow of bile from liver to gall bladder to small intestine and can help detect gall bladder inflammation (Cholecystitis), bile duct obstruction and congenital problems with bile duct. It can also help assess the progress after liver transplant.