What are gastrointestinal examinations?
X-ray examinations of the gastrointestinal (GI) tract-- which includes the
esophagus, stomach, small intestines, large intestines and rectum-- enable your physician
to detect abnormalities in these organs.
Gastrointestinal examinations are usually called either "upper GI" or
"lower GI," depending on the organs that are to be studied:
- The upper GI test examines the esophagus, stomach and part of the small intestine. For
this test, the patient swallows a contrast solution that contains barium.
- The lower GI test examines the large intestine and the rectum. For this test, barium is
administered rectally by enema.
Before the exam
- Please be aware that correct preparation is very important for the test to be performed
properly. Your test may need to be rescheduled for an alternate date if the correct
preparation is not completed.
On the day of the exam
Please do not bring valuables such as jewelry or credit cards.
- All examinations are performed and interpreted by registered and licensed technologists
and board-certified radiologists.
- You will be asked to change into a hospital gown.
Types of exams
Air contrast enema
X-ray examination of the large intestine (colon). Barium and air are introduced
gradually into the colon by a rectal tube. Approximate time: 1 1/2 to 2 hours.
Barium enema
X-ray examination of the large intestine (colon). Barium is introduced gradually
into the colon by a rectal tube. Approximate time: 1 to 1 1/2 hours.
Barium swallow (Esophagography)
X-ray examination of the esophagus as you swallow a barium solution. Approximate
time: 1 hour.
Small bowel series
X-ray examination of the small intestine (small bowel). You drink a barium
solution and x-ray films are taken at intervals to follow the flow of barium through the
small intestine. Approximate time: 2 to 4 hours.
Upper GI series
X-ray examination of the stomach as you swallow a barium solution. Approximate
time: 1 to 1 1/2 hours.
After the exam
Generally you can resume your usual activities and normal diet immediately. However, you
are encouraged to increase your fluid intake.
The results of your gastrointestinal exam should be available to your physician within
24 hours after the test, Monday through Friday.
Your physician will discuss the test results with you.