Radiology Terms

Oral Contrast

What Is Oral Contrast and Why Is It Used in Medical Imaging?

Oral contrast is a liquid that is swallowed usually 60 to 90 minutes before certain medical imaging tests. 

The contrast appears bright on images which helps the radiologist better visualize and differentiate the organs and tissues on medical images. Oral contrast is used to create more detailed images of the esophagus, stomach, and intestines. It is used most frequently with CT scans.