image-guided radiation therapy

Definition / meaning of image-guided radiation therapy

A procedure that uses a computer to create a picture of a tumor to help guide the radiation beam during radiation therapy. The pictures are made using CT, ultrasound, X-ray, or other imaging techniques. Image-guided radiation therapy makes radiation therapy more accurate and causes less damage to healthy tissue. Also called IGRT.

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Find More About 'image-guided radiation therapy'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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