double-contrast examination


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double-contrast examination

A radiographic examination in which a radiopaque and a radiolucent contrast medium are used simultaneously to visualize internal anatomy.
See also: examination
References in periodicals archive ?
When a double-contrast examination is contraindicated, as in cases of acute esophageal obstruction or because of patient condition, a single-contrast study can be done.
Evaluation of the upper GI tract with a single-contrast radiographic exam is sufficient in many cases of dyspepsia, whereas double-contrast examination of the lumen of the bowel can accurately detect polyps, erosions, small ulcers and other mucosal diseases.