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high-energy photon therapy (hy-EH-nur-jee FOH-ton THAYR-uh-pee)

 A type of radiation therapy that uses high-energy photons (units of light energy). High-energy photons penetrate deeply into tissues to reach tumors while giving less radiation to superficial tissues such as the skin.



Previous Definitions:high grade, high-dose chemotherapy, high-dose radiation, high-dose-rate remote brachytherapy, high-dose-rate remote radiation therapy
Next Definitions:high-grade lymphoma, high-grade squamous intraepithelial lesion, high-intensity focused ultrasound therapy, high-risk cancer, high-selenium Brassica juncea

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