Intensity Modulated Radiation Therapy (IMRT), the ultimate in customized radiation therapy, may be used for patients with cancer of the prostate, brain, head, neck, cancers near critical areas, cancers on the extremities to help spare lymphatics and decrease chronic swelling, and other selected situations. IMRT may also be used as a retreatment method.

IMRT delivers radiation to a tumor using many thin leaves that open and close at the right time to conform to the exact shape of the tumor, particularly those that are irregularly shaped. The beams focus directly on the cancer and change as the radiation reaches the target.

There are minimal side effects for IMRT when compared to conventional radiation techniques. IMRT can be used in combination with Respiratory Gating technology.