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Alternative names Return to top
Radionuclide - gallbladder; Gallbladder scan; Biliary scan; CholescintigraphyDefinition Return to top
This is a test that uses a gamma emitting tracer (radioactive material) to assess gallbladder function, and/or look for an infected gallbladder or obstructed bile ducts.How the test is performed Return to top
First, the tracer (a radioactive chemical that will collect primarily in the liver and then is excreted with bile into the gallbladder) is injected into a vein (usually at the bend in the arm). The scan is then performed.How to prepare for the test Return to top
You will be instructed not to eat or drink anything for 4 hours (or longer) before the test. You must sign an informed consent form.How the test will feel Return to top
When the tracer is injected into the vein, there will be a sharp prick from the needle. After the injection, the puncture site may be sore. There is no pain during the scan.Why the test is performed Return to top
This test is very good for detecting acute infection of the gallbladder or blockage of a bile duct. It is also helpful in determining whether there is rejection of a transplanted liver.What abnormal results mean Return to top
What the risks are Return to top
There is a small risk to pregnant or nursing mothers because the fetus or small child has a greater sensitivity to radioactive chemicals. Unless it is absolutely necessary, the scan will be delayed.
The amount of radiation is small (less than that of a conventional X-ray) and is virtually gone from the body within 1 or 2 days. With increased number of scans, there is some radiation risk.
Special considerations Return to top
Since this test is usually not performed unless there is acute pain, suspected gallbladder disease, or gall stones, many patients require special attention after the results of the test are known. If necessary, combined with other imaging (such as CT or ultrasound), the patient may be prepared for surgery following the gallbladder scan. Update Date: 10/17/2003 Updated by: Jeffrey Brown, M.D., Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |