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- (â¦ PAR-tih-kul RAY-dee-AY-shun THAYR-uh-pee) A type of external radiation therapy that uses a special machine to make invisible, high-energy particles (protons or helium ions) that kill cancer cells. This type of radiation may cause less damage to nearby healthy tissue than radiation therapy with high-energy x-rays.
National Cancer Institute - Cite This Source - This Definition
- electron beam, external-beam radiation therapy, external radiation therapy, fast-neutron beam radiation, intensity-modulated radiation therapy, intraoperative radiation therapy, ionizing radiation, photon-beam radiation, plaque radiotherapy, proton beam radiation therapy, radiation necrosis, radiation oncologist, radioimmunotherapy, radiosensitization, radiosensitizer, systemic radiation therapy, ultraviolet radiation therapy, unsealed internal radiation therapy, x-ray therapy