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(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 radiotherapy and irradiation. |
| Previous Definitions: | radiation nurse, radiation oncologist, radiation physicist, radiation surgery, radiation therapist | | Next Definitions: | radical cystectomy, radical hysterectomy, radical local excision, radical lymph node dissection, radical mastectomy |
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