Intensity Modulated Radiation
Intensity-modulated radiation therapy (IMRT) is an advanced form of 3-D conformal radiation therapy. Not everyone is a candidate for IMRT, but for those who are, it is one of the most precise forms of external beam radiation therapy available.
In some cancer patients, conventional radiation treatment cannot achieve the desired effect without the risk of damage to surrounding tissue. IMRT uses sophisticated software and equipment to vary the shape and intensity of radiation delivered to different parts of the treatment area. Because the radiation is conformed even more tightly to the tumor, there is less risk of damage to normal tissues. And doctors can deliver a larger dose of radiation to the tumor with the confidence that the dose is highly targeted.
IMRT is useful in treating many types of cancer, and is performed on an outpatient basis. Most patients receive about six weeks of treatment.