| Double-contrast barium enema | |
|---|---|
 Human intestinal tract, as imaged via double-contrast barium enema | |
| Purpose | radiography which uses 2 forms of contrast for better image |
Adouble-contrast barium enema is a form ofcontrast radiography in whichx-rays of thecolon andrectum are taken using two forms ofcontrast to make the structures easier to see.[1] A liquid containingbarium (that is, aradiocontrast agent) is put into the rectum. Barium (usually as a sulfate) outlines the colon and rectum on anx-ray and helps show abnormalities.Air is also put into the rectum and colon to further enhance the x-ray.
Double-contrast barium enemas are less invasive than acolonoscopy and have comparatively fewer issues in a viable large bowel.[2]
This article incorporatespublic domain material fromDictionary of Cancer Terms.U.S. National Cancer Institute.
