CT Enterography

A non-invasive imaging technique used to obtain detailed images of the small intestine.

Radiologists use CT enterography to evaluate and diagnose disorders of the small intestine such as inflammatory bowel disease (e.g., Crohn’s disease), tumors, abcesses or other growths, and obstructions within the small bowel. This method can also detect the presence and source of gastrointestinal bleeding.

A patient is given either an oral or intravenous dose of contrast agent that will highlight the bowel wall for the radiologist to see on a computer screen.

Between one and two hours before your appointment, you will be asked to drink a distending agent to empty the small intestine. You will be asked to drink a contrast agent, or an agent may be delivered through an IV. You will be asked to lie on a table and hold your breath for 20 to 30 seconds as the scan happens. The table moves slowly through the ring-shaped CT scanner as the images are taken. The procedure can be as short as 10 minutes. After the study is completed you may resume normal diet and activities and any medications you may take. The radiologist will interpret the images and send a report to your referring doctor.

You will be instructed not to eat the morning of the procedure or at least four hours before the procedure. You may be asked to drink a specific amount of water before the procedure.