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(RAY-dee-oh-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 radiotherapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Also called irradiation and radiation therapy. |
| Previous Definitions: | radionuclide scanning, radiopharmaceutical, radiosensitization, radiosensitizer, radiosurgery | | Next Definitions: | radon, Raftilose Synergy 1, raloxifene, raloxifene hydrochloride, raltitrexed |
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