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

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

April 16, 2020
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Intensity-modulated radiation therapy (IMRT)