National Cancer Institute National Cancer Institute
U.S. National Institutes of Health National Cancer Institute
Dictionary of Cancer Terms
Send to Printer
interstitial radiation therapy (IN-ter-STIH-shul RAY-dee-AY-shun THAYR-uh-pee)

 A type of internal radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into a tumor or body tissue.

Previous Definitions:interleukin-7, intermediate-grade lymphoma, internal examination, internal radiation therapy, International Unit
Next Definitions:intervention, intervention group, intestinal, intestinal villi, intestine