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What is Intensity-Modulated Radiation Therapy (IMRT)?

Intensity-modulated radiation therapy (IMRT) is a form of radiation therapy that is used to treat different types of cancer. This advanced type of radiation therapy uses a computer-controlled device, called a linear accelerator, to deliver precise doses of radiation to tumors or specific areas within the tumors. Radiation therapy, including IMRT, stops cancer cells from dividing and growing, thus slowing or stopping tumor growth. In many cases, radiation therapy is capable of killing all the cancer cells.

Using 3-D computed tomography (CT) images along with computerized dose calculations, IMRT allows for the radiation dose to conform more precisely to the shape of the tumor by controlling, or modulating, the intensity of the radiation beam. The therapy allows higher radiation doses to be delivered to areas within the tumor while minimizing the dose to the surrounding area.
Dede Bonner
Health Education

Intensity-modulated radiation therapy (IMRT) is an advanced method that uses computers to deliver precisely controlled radiation doses to specific tumor areas. Treatment is carefully planned using three-dimensional (3D) computerized tomography (CT) images that help determine dosages based on the tumor’s shape.

The 10 Best Questions for Surviving Breast Cancer: The Script You Need to Take Control of Your Health

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The 10 Best Questions for Surviving Breast Cancer: The Script You Need to Take Control of Your Health

A good mind knows the right answers...but a great mind knows the right questions. And never are the Best Questions more important than after a diagnosis of breast cancer. Drawing on cutting-edge...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.