Cholescintigraphy

Cholescintigraphy is a medical imaging procedure used to diagnose problems in the gallbladder and biliary system. It is also known as a hepatobiliary iminodiacetic acid (HIDA) scan, after the type of radioactive tracer used in the procedure.

Procedure

Cholescintigraphy involves the injection of a small amount of a radioactive tracer, usually technetium-99m labelled iminodiacetic acid derivatives, into the patient's bloodstream. This tracer is taken up by the liver, and then excreted into the bile ducts and stored in the gallbladder. A gamma camera is used to capture images of the tracer as it moves through these organs, allowing doctors to identify any abnormalities.

Uses

Cholescintigraphy is primarily used to diagnose acute cholecystitis, a condition characterized by inflammation of the gallbladder. It can also be used to detect bile duct obstruction, biliary dyskinesia, and gallbladder perforation. In some cases, it may be used to assess liver function and bile flow.

Risks and Complications

As with any medical procedure, there are potential risks and complications associated with cholescintigraphy. These may include allergic reactions to the tracer, radiation exposure, and false positive or negative results. However, the procedure is generally considered safe and the benefits typically outweigh the risks.

See Also

• Gallbladder disease
• Medical imaging
• Nuclear medicine

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