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contrast medium
noun
a radiopaque substance injected into a part of the body, as the stomach or duodenum, to provide a contrasting background for the tissues in an x-ray or fluoroscopic examination.
contrast medium
noun
med a radiopaque substance, such as barium sulphate, used to increase the contrast of an image in radiography
contrast medium
A substance, such as barium or air, used in radiologic studies to increase the contrast of an image. In x-ray imaging, a positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly.
51³Ō¹Ļ History and Origins
Origin of contrast medium1
Example Sentences
You will need to drink a solution of a contrast medium for the scan, and thereās a very low level of radiation exposure.
Its biggest apparent shortcomingāfailure to identify cardiovascular diseaseāis easily explained, he says: there is no circulation to move around the contrast medium that illuminates blood vessels from the inside.
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