What is radiation therapy? When is it used?
Radiation therapy is one of the most common treatments for cancer. It uses high-energy particles or waves, such as x-rays, gamma rays, electron beams, or protons, to destroy or damage cancer cells. Other names for radiation therapy are radiotherapy, irradiation, or x-ray therapy.
Radiation can be given alone or used with other treatments, such as surgery or chemotherapy. In fact, certain drugs are known to be radiosensitizers (RAY-dee-oh-SENS-it-tie-zers). This means they can actually make the cancer cells more sensitive to radiation, which helps the radiation to better kill cancer cells.
There are also different ways to give radiation. Sometimes a patient gets more than one type of radiation treatment for the same cancer.
Last Medical Review: June 30, 2015 Last Revised: June 30, 2015
- What is radiation therapy? When is it used?
- How does radiation therapy work?
- Do the benefits of radiation therapy outweigh the risks and side effects?
- How much does radiation treatment cost?
- Who gives radiation treatments?
- Informed consent for radiation therapy
- How is radiation therapy given?
- External radiation therapy
- Internal radiation therapy (brachytherapy)
- Systemic radiation therapy
- Common side effects of radiation therapy
- Long-term side effects of radiation therapy
- Managing side effects of radiation treatment to certain parts of the body
- Side effects from radiation therapy to the head and neck
- Side effects from radiation therapy to the brain
- Side effects from radiation therapy to the breast
- Side effects from radiation therapy to the chest
- Side effects from radiation therapy to the stomach and abdomen
- Side effects from radiation therapy to the pelvis
- Taking care of yourself during radiation therapy
- Follow-up care after radiation therapy
- Radiation therapy glossary
- To learn more