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Radiation therapy

Synonym(s)

  • irradiation
  • radiotherapy
  • RT
  • x-ray therapy

Definition(s)

The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or from materials called radioisotopes. Radioisotopes produce radiation and can be placed in or near the tumor or in the area near cancer cells. This type of radiation treatment is called internal radiation therapy, implant radiation, interstitial radiation, or brachytherapy. Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that circulates throughout the body. Also called radiotherapy, irradiation, and x-ray therapy.

Definition from: Physician Data Query via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

Related discussion in the Handbook

See also Understanding Medical Terminology.

 
Published: September 15, 2014