Proton therapy is a type of radiation therapy that uses robotic technology and an image guidance system to deliver a highly concentrated and focused beam of radiation to the tumor. Because the proton beam is so precisely targeted, it aggressively treats the tumor while preserving the healthy, surrounding tissues and/or organs.

For women or men with tumors in the left breast, proton therapy minimizes incidental radiation exposure to the nearby heart muscle and may reduce the risk of heart disease or arrhythmias developing later in life. It may also lessen the chance of secondary cancers occurring in the region that was treated.

Janice Lyons, MD, Director of Breast Radiation Oncology at UH Seidman Cancer Center explains how proton therapy works, who may be a good candidate for proton therapy, and how breast cancer patients receive several different radiation therapy plans to choose the best plan for the patient.

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