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 ?
Contrast-induced nephropathy (CIN) is defined as an acute, generally reversible decline in renal function that occurs 48-72 hours after intravascular injection of contrast medium [30, 31].
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.
713 The second mechanism is the creation of an imbalance between tissue oxygen delivery and oxygen use which occurs due to a reduction of blood flow in the medulla caused by contrast medium.
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.
14] carried out a retrospective study analyzing 11,588 patients who underwent CT either without contrast or with a low osmolar contrast medium (iohexol) or an iso-osmolar contrast medium (iodixanol); they observed no significant difference in the incidence of AKI between the iso-osmolar contrast medium and the control groups for all baseline SCr values; the incidence of AKI in the low osmolar contrast medium group was similar to that of the control group up to an SCr level of 1.
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.
Sonazoid, which is developed in close collaboration with GE Healthcare, the licensor, is a minimally invasive contrast medium characterized by prolonged ability to maintain its contrasting attributes.
Coronary angiography and left ventriculographywere performed using just 80 cc lopromid (Ultravist 300, Schering AG, Germany): a nonionic low osmolar contrast medium containing approximately 300 mg/mL iodide.
Myelography, radiographic examination of the spinal cord following injection of a contrast medium, is a useful aid for the diagnosis of spinal-cord disease in mammals.
CT cisternography identified dehiscence of the left lateral sphenoid recess, which contained contrast medium that had drained into the nasal cavity (figure 3).
The problematic samples had been collected from patients shortly after radiologic examinations requiring administration of iodinated radio-opaque contrast medium (Visipaque[R] or Omnipaque[R]).