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When are protons used to treat brain tumors?

Tania B. Kaprealian, MD
Radiation Oncology
Protons are a useful form of radiation therapy for some kinds of pediatric tumors. They are also beneficial for chordomas in the brain, as these require a very high dose and are often next to critical structures such as the optic nerve. The beauty of protons is that they have a very low entry dose, and they peak high where you want to deliver the dose and then sharply fall off, so there’s not much of an exit dose. 

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