(RAY-dee-AY-shun THAYR-uh-pee) The use of high-energy radiation from x-rays, gamma rays, neutrons, protons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Also called irradiation and radiotherapy.
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(ray-dee-AY'-shun THER'-a-pee) is the use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Also called radiotherapy, irradiation, and x-ray therapy. See Radiation Therapy for more information.
- Browse Related Terms: aspiration, chemotherapy, Computed Tomography, contraindications, Implant radiation, Radiation, Radiation Therapy, Radiologist, Radiotherapeutic ablation, Systemic Therapy, Ultrasound