contrast medium


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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.

contrast medium

n
(Medicine) med a radiopaque substance, such as barium sulphate, used to increase the contrast of an image in radiography

con′trast me`dium



n.
a radiopaque substance introduced into a part of the body to provide a contrasting background for the tissues in an x-ray examination.
[1950–55]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.contrast medium - a substance that is opaque to x-rays; when administered it allows a radiologist to examine the organ or tissue it fills
medium - (biology) a substance in which specimens are preserved or displayed
References in periodicals archive ?
The contrast medium dose, the CT values of liver parenchyma during HAP and PVP, the CT values of portal vein during PVP, TLC values, and liver parenchyma [DELTA]HU during HAP and PVP in G1 and G2 were presented as mean [+ or -] standard deviation (SD).
On the basis of available literature as also experts opinion the paper published in 2014 present a list of risk factors, the presence of witch should require baseline serum creatinine concentration before the use of iodinated contrast medium administration.
Contrast medium extravasation injury: guidelines for prevention and management.
We examined the following factors related to operative treatment: type of procedure (thoracic or abdominal endovascular stent graft placement), operative time, quantity of contrast medium used, and intraoperative red blood cell transfusion.
Contrast-induced acute kidney injury (CIAKI), which is characterized by the development of acute renal insufficiency after exposure to a radiocontrast agent, is a major complication that has adverse outcomes after contrast medium injections.
Contrast media are grouped according to their osmolality or iconicity.41112 Toxic effects of contrast media are thought to depend primarily on the contrast medium's osmolality.
An X-ray procedure may take only a few minutes for a bone X-ray, or more than an hour for more involved procedures, such as those using a contrast medium.
In a retrospective study analyzing 11,588 patients undergoing CT either without contrast or with the low-osmolar contrast medium iohexol or the isoosmolar contrast medium iodixanol Bruce et al.
In our unit, iobitridol (Xenetix) is used as contrast medium. It is water-soluble, nonionic, low-osmolar iodinated agent.
In this study, it was aimed to investigate the effects of non ionic low osmolar contrast medium administration on oxidant/antioxidant status and NO levels in rat kidney tissues.
Contrast-induced nephropathy (CIN) is defined typically as a fixed rise in serum creatinine levels of 25% over baseline, or an absolute increase of at least 0.5 mg/dL within 48 hours after exposure to contrast medium that is maintained for 2-5 days and can not be attributed to other causes.
Although contrast medium is subject to the same regulatory and accrediting body requirements as other drugs, contrast storage and handling might not be included in hospital policies concerning medication storage.