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radiopaque

American  
[rey-dee-oh-peyk] / ˌreɪ di oʊˈpeɪk /

adjective

  1. opaque to radiation; visible in x-ray photographs and under fluoroscopy (opposed to radiotransparent).


radiopaque British  
/ ˌreɪdɪəʊˈpeɪk, ˌreɪdɪəʊˈpæsɪtɪ /

adjective

  1. not permitting X-rays or other radiation to pass through

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of radiopaque

First recorded in 1925–30; radi(o)- + opaque

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Example Sentences

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Diagnosticians can then take samples of blood for a variety of tests, check pressure inside the ventricle, and inject radiopaque dyes for X rays to reveal abnormal or damaged arteries.

From Time Magazine Archive

Injections of radiopaque dye also help X rays to show whether arteries have been displaced or damaged enough to deprive part of the brain of its blood supply.

From Time Magazine Archive

Angiograms, special X-ray pictures made by injecting a radiopaque substance through a thin tube inserted into the heart or coronary arteries, provide more accurate information about constrictions in the coronary arteries.

From Time Magazine Archive

He is impatiently awaiting delivery of an X-ray machine which will take pictures at 1/500 sec. and, with radiopaque dyes, will show precisely where and how extensively a coronary artery is blocked�or unblocked.

From Time Magazine Archive

In some cases, the next thing to do is inject radiopaque dye into the patient's arm or neck arteries and take an arteriogram, a rapid-fire series of X rays.

From Time Magazine Archive

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