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Radiation therapy is the use of high-energy radiation, such as X-rays, to destroy cancer cells and shrink tumours. Radiation may come from a machine outside the body (external radiation therapy). Radiation can also be given from inside your body (internal radiation therapy). For example, brachytherapy uses radiation implants that are placed in or near the cancer. Systemic radiation therapy is given by a pill or injection. And intraoperative radiation therapy is given inside the body during an operation.
Radiation therapy is standard treatment for many types of cancer. It may be used in combination with other treatments, such as surgery, chemotherapy, or immunotherapy.
Current as of: October 25, 2023
Author: Healthwise Staff
Clinical Review BoardAll Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
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