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Learn MoreA contrast barium enema produces images of the large intestine. It includes the colon and anus.
This test is sometimes called a lower GI series. Its full name is lower gastrointestinal tract radiography.
A doctor may want your child to have this test if they have:
The lower gastrointestinal tract includes the large intestine, the appendix, and the rectum.
A radiologist and radiological technologist perform the test.
This test uses a form of x-ray called fluoroscopy. That means it uses a small amount of ionizing radiation to produce images. The amount of radiation is very small.
The medical benefits outweigh the small amount of radiation exposure. You should discuss any concerns with your child’s care team.
The test also uses a contrast liquid. The liquid is either a milky white substance called barium or a clear liquid containing iodine. The contrast liquid helps the bowel to appear more clearly on the viewing screen.
Fluoroscopy makes it possible to see internal organs in motion. It’s like a “live” X-ray. It allows doctors to see the colon and rectum and how they function.
Fluoroscopic side view of a lower GI series test in a pediatric cancer patient.
The small green arrow points to a problem area in the large intestine on an image from a lower GI series test.
To get the best image possible, the colon must be empty. Your child must prepare for a barium enema exam. Follow the instructions based on your child’s age.
Here’s what you and your child can expect during the test:
The test usually takes about 30 minutes.
These tips can help you make sure everything is in order before your child’s test:
The radiologist will interpret the results and send a report to the doctor who ordered the test. A member of your child’s care team will share results at the next appointment.
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Reviewed: July 2022