Overview

Intensity-modulated radiation therapy (IMRT) is an advanced type of radiation therapy used to treat cancer and noncancerous tumors.

IMRT uses advanced technology to manipulate photon and proton beams of radiation to conform to the shape of a tumor.

IMRT uses multiple small photon or proton beams of varying intensities to precisely irradiate a tumor. The radiation intensity of each beam is controlled, and the beam shape changes throughout each treatment.

The goal of IMRT is to conform the radiation dose to the target and to avoid or reduce exposure of healthy tissue to limit the side effects of treatment.

Why it's done

Intensity modulated radiation therapy, or IMRT, is used to treat cancerous and noncancerous tumors. Radiation beams fit the shape of the tumor. The goal is to target the radiation to limit side effects and damage to healthy tissue.

Clinical trials

Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this disease.

Intensity-modulated radiation therapy (IMRT) care at Mayo Clinic

Dec. 07, 2018
References
  1. Hoppe RT, et al., eds. Three-dimensional conformal radiotherapy and intensity-modulated radiotherapy. In: Leibel and Phillips Textbook of Radiation Oncology. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2010. http://www.clinicalkey.com. Accessed March 29, 2017.
  2. Mitin T. Radiation therapy techniques in cancer treatment. http://www.uptodate.com/home. Accessed March 29, 2017.
  3. Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. Jan. 13, 2017.
  4. Accredited facility search. American College of Radiology. http://www.acraccreditation.org/accredited-facility-search. Accessed April 6, 2017.
  5. Searching for cancer centers. American College of Surgeons. https://www.facs.org/search/cancer-programs. Accessed April 6, 2017.
  6. Foote RL (expert opinion). Mayo Clinic, Rochester, Minn. April 2, 2017.

Intensity-modulated radiation therapy (IMRT)