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  1. External Beam Radiation Therapy for Cancer - NCI

    May 15, 2025 · External beam radiation therapy is used to treat many types of cancer. it is a local treatment, where a machine aims radiation at your cancer. Learn more about different types of …

  2. Radiation Therapy for Cancer - NCI

    May 15, 2025 · Radiation therapy is a type of cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. Learn about the types of radiation, why side effects happen, which …

  3. Radiation Therapy | Breast Cancer Treatment - NCI

    Dec 2, 2025 · External beam radiation therapy and brachytherapy (internal radiation therapy) are the main types of radiation therapy used for breast cancer. External beam radiation therapy comes from …

  4. Types of Radiation Therapy - SEER Training

    Dec 21, 2023 · This section provides an overview of two board categories of radiation therapy, some specific treatment types in these categories, how these treatments are delivered, and the treatment …

  5. SBRT Proves Effective for Some Prostate Cancers - NCI

    Nov 21, 2024 · Results from the study were published October 16 in the New England Journal of Medicine. SBRT very precisely targets radiation to the tumor while minimizing exposure to normal …

  6. Definition of external radiation therapy - NCI Dictionary of Cancer ...

    A type of radiation therapy that uses a machine outside the body to send high-energy radiation beams toward the area of the body with cancer. It is used to treat many types of cancer.

  7. RefleXion – Biology-Guided Radiotherapy - NCI - Cancer

    May 23, 2024 · The innovation would integrate radiation therapy, which uses high-energy X-rays to treat cancer, around a PET scanner, which administers a radiopharmaceutical in the body to light up …

  8. Radiation Therapy - SEER Training

    Jan 10, 2025 · This type of radiation therapy uses a machine outside the body to send radiation toward the area of the body with cancer. Radiation therapy may be given alone or with other types of …

  9. Missed Radiation Therapy and Cancer Recurrence - NCI

    Feb 26, 2016 · Patients who miss radiation therapy sessions during cancer treatment have an increased risk of their disease returning, even if they eventually complete their course of radiation treatment, …

  10. Radiation Therapy - SEER Training

    Apr 22, 2025 · This type of radiation therapy uses a machine outside the body to send radiation toward the area of the body with cancer. Radiation therapy may be given alone or with other types of …