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  1. Radiation Therapy for Cancer - NCI

    May 15, 2025 · Radiation therapy (also called radiotherapy) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. At low doses, radiation is used in x-rays …

  2. Radiation therapy - Mayo Clinic

    Jul 2, 2024 · Radiation therapy, also called radiotherapy, is a type of cancer treatment. This treatment uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays. But …

  3. Radiation Therapy for Cancer: How Does It Work? - Cleveland Clinic

    Sep 7, 2022 · Radiation therapy — or radiotherapy — is a common cancer treatment that uses radiation (usually high-powered X-rays) to kill cancer cells. Radiation therapy may be used …

  4. What is radiotherapy? | Cancer treatment | Cancer Research UK

    Radiotherapy means the use of radiation, usually X-rays, to treat cancer. There are 2 main types - external and internal radiotherapy.

  5. Radiation Therapy: Purpose, Procedure, Side Effects, and More

    Feb 11, 2026 · There are two types of radiation therapy: external beam radiation (EBRT) and internal radiation. Your doctor will consider many factors when deciding which is best for you, including: With...

  6. Radiation | American Cancer Society

    You might also hear it called radiotherapy, irradiation, x-ray therapy, radiation treatment, or sometimes just radiation. Learn more about how radiation therapy works, what to expect when you get …

  7. What is radiotherapy? - Worldwide Cancer Research

    Sep 16, 2025 · What is radiotherapy? Radiotherapy, sometimes called radiation therapy, is a form of cancer treatment that uses special 'ionising' radiation to target cancer cells. Ionising radiation …

  8. Radiation Therapy - Johns Hopkins Medicine

    Radiation therapy is a type of cancer treatment. You may also hear it called radiotherapy or therapeutic radiology. Radiation therapy kills cancer cells with beams of high-energy X-rays, gamma rays, or …

  9. Radiation therapy | Definition, Types, & Side Effects | Britannica

    Mar 1, 2026 · radiation therapy, the use of ionizing radiation (high-energy radiation that displaces electrons from atoms and molecules) to destroy cancer cells. Radiation has been present throughout …

  10. How Radiotherapy Works: A Complete Step-by-Step Guide

    Mar 17, 2025 · Radiation therapy, or radiotherapy, destroys cancer cells by targeting their DNA, preventing them from growing and multiplying. This powerful medical tool works alongside …