A barium enema, also known as a lower gastrointestinal (GI) examination, takes an X-ray of the large intestine (colon and rectum) and is used to detect disease or other problems.

During the exam, the colon is filled with a contrast material containing barium. The use of barium causes the colon to show up clearly on the X-ray images.

There are two types of barium enemas, a single contrast study and an air-contrast study. A single-contrast study fills the colon with barium, outlining the intestine and revealing abnormalities.

In an air-contrast study, the colon is first filled with barium and then drained shortly after, leaving a thin layer of barium on the wall of the colon. The colon is then filled with air, providing a detailed view of the inner surface of the colon. The test is best to see colon polyps, colorectal cancer, or inflammation.

Preparation for the Exam

Preparing for a barium enema generally requires a thorough cleansing of the large intestine to completely clear stool matter and gas. Your patient will need to pick up a Prep Kit at any of the major Inland Imaging centers.

Your patient should follow the 48-hour preparation instructions starting at 8:00am two (2) days prior to the scheduled exam.

Precautions