double-contrast barium enema

medical procedure

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June 17, 2026

Quick Summary

A double-contrast barium enema is a medical procedure that uses a contrast medium to create a clearer image of the rectum and colon on an X-ray film. The contrast medium, most commonly barium sulfate, is opaque to X-rays, meaning it absorbs them and appears lighter on the film.12

In this procedure, a mixture of barium sulfate and air is introduced into the colon via the rectum. The barium coats the lining of the colon, while the air distends it. This double-contrast technique allows for a more detailed visualization of the colon's inner surface, helping to identify abnormalities such as polyps, tumors, or inflammation.2

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colorectal cancer
Diagnosis
An X-ray procedure called a double-contrast barium enema may be used. Barium sulfate is used to coat the colon, and the colon is filled with air. A series of X rays are then taken, and the resulting high-contrast images indicate any abnormalities present.
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An X-ray procedure called a double-contrast barium enema may be used. Barium sulfate is used to coat the colon, and the colon is filled with air. A series of X rays are then taken, and the resulting high-contrast images indicate any abnormalities present.
Read More