intensity-modulated radiation therapy (IMRT)

Definition of intensity-modulated radiation therapy
National Cancer Institute

intensity-modulated radiation therapy

(in-TEN-sih-tee-MAH-juh-LAY-tid RAY-dee-AY-shun THAYR-uh-pee)
A type of 3-dimensional radiation therapy that uses computer-generated images to show the size and shape of the tumor. Thin beams of radiation of different intensities are aimed at the tumor from many angles. This type of radiation therapy reduces the damage to healthy tissue near the tumor. Also called IMRT.

Source: NCI Dictionary of Cancer Terms