Contrast material, or contrast dye, is a substance used to make specific organs, blood vessels, or types of tissue (such as tumors) more visible on X-rays. Contrast material may also be used during a CT scan, an ultrasound, or an MRI scan.
Common contrast material substances include iodine, barium, and gadolinium.
Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
Specialist Medical ReviewerHoward Schaff, MD - Diagnostic Radiology
Current as ofSeptember 9, 2014
WebMD Medical Reference from Healthwise