NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,811 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- contrast material
- listen (KON-trast muh-TEER-ee-ul)
- A dye or other substance that helps show abnormal areas inside the body. It is given by injection into a vein, by enema, or by mouth. Contrast material may be used with x-rays, CT scans, MRI, or other imaging tests.