Radiation Therapy (ray-dee-AY-shun THER-ah-pee) at Medical Glossary

What is it? The use of high-energy radiation from x-rays, gamma rays, neutrons, 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 pl

Medical Definition Added By: Claire

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