Skip To The Main Content

radiation therapy

The use of high-energy radiation from x-rays, gamma rays, neutrons, protons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Also called irradiation and radiotherapy.


MetroWest Medical Center provides advanced medicine and personalized care, right here in your community.

Click here to read our Community Newsletter


The Center for Heart & Vascular Services. At the forefront of heart and vascular disease for more than 25 years.

Learn More