External-beam radiation therapy (EBRT) is a treatment where radiation beams come from a source outside the body. Usually, it comes from a machine called a linear accelerator (also called a LINAC).

If you've been diagnosed with cancer, your doctor may suggest you get radiation therapy. It's a common treatment that shrinks tumors and kills cancer cells -- and might be the only one you need to ...

Radiation therapy uses high-energy rays to destroy cancerous cells. Doctors may recommend a combination of radiation therapy and chemotherapy to treat esophageal cancer. Radiation therapy uses ...

If you would like to learn more about the IAEA’s work, sign up for our weekly updates containing our most important news, multimedia and more. Non-medical human imaging is the use of radiation to ...