Interstitial Radiation Therapy

**Semantic type:** Therapeutic or Preventive Procedure

**Definition:** 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. (Cancer.gov)

**Synonyms:** - BRACHYTHERAPY, INTERSTITIAL - INSTIT - Implant Radiation - Interstitial brachytherapy (procedure) - Radiation, Implants - implant radiation - interstitial radiation therapy