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Home >Information for Patients > Dictionary Index
Dictionary of Cancer Terms
View in Spanish: Radioterapia con haz de protón
Proton beam radiation therapy (PROH-ton beem RAY-dee-AY-shun THAYR-uh-pee)
A type of high-energy, external radiation therapy that uses streams of protons (small, positively charged particles) that come from a special machine. Proton beam radiation is different from x-ray radiation.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.
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22 S. Greene Street, Baltimore, MD 21201
22 S. Greene Street, Baltimore, MD 21201
