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Definition of Scintigraphy

Scintigraphy: A diagnostic test in which a two-dimensional picture of a body radiation source is obtained through the use of radioisotopes. For example, scintigraphy of the biliary system (cholescintigraphy) is done to diagnose obstruction of the bile ducts by a gallstone, a tumor, or another problem; disease of the gallbladder; and bile leaks. For cholescintigraphy, a radioactive chemical is injected intravenously into the patient. The chemical is removed from the blood by the liver and secreted into the bile that the liver makes. The chemical then goes everywhere that the bile goes: into the bile ducts, the gallbladder, and the intestine. By placing over the abdomen a camera that senses radioactivity, a picture of the liver, bile ducts, and gallbladder can be obtained that corresponds to the location of the radioactivity.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=9136
Last Editorial Review: 3/19/2012

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