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(ih-RAY-dee-AY-shun)
| | 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 irradiation uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Also called radiation therapy and radiotherapy. |
| Previous Definitions: | irinotecan, iris, irofulven, iron, irradiated | | Next Definitions: | irreversible toxicity, iseganan hydrochloride, ISIS 2503, ISIS 3521, ISIS 5132 |
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