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Contrast medium

   Also found in: Dictionary/thesaurus, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.15 sec.
contrast medium
n.
A substance, such as barium or air, used in radiography to increase the contrast of an image. A positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly. Also called contrast agent.
Contrast medium
A chemical substance used to make an organ or body part opaque on x ray.
Mentioned in: Hysterosonography
contrast medium Contrast, contrast agent Imaging A substance with a density–eg, a dye or signal differing from that of the organ or structure being imaged, which allows delineation of contour abnormalities; CMs that are more radiopaque–eg with barium or iodine—than the organ or structure being analyzed are known as positive CM, while those that are less radiopaque–eg, with air, are known as negative CM. See Radiopaque contrast.


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? Mentioned in ? References in periodicals archive
 
Tokyo, Japan, Oct 26, 2006 - (JCN) - Japan's Ministry of Labour, Health and Welfare ttoday granted Daiichi Pharmaceutical approval for the ultrasound contrast medium Sonazoid for Injection, a worldwide first.
Daiichi Pharmaceutical Receives Import Approval for Ultrasound ... by JCNN News Summaries
CT cisternography identified dehiscence of the left lateral sphenoid recess, which contained contrast medium that had drained into the nasal cavity (figure 3).
CSF fistula secondary to sphenoid meningoencephalocele by Scheuemann, Christian / Ear, Nose and Throat Journal
Use a conventional contrast medium, but require premedication with steroids and antihistamines to reduce complications.
Indications for the use of low-osmolar contrast agents by Bloom, David M. / Physician Executive
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