external-beam radiation therapy

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1 Definition of external-beam radiation therapy

Meaning of external-beam radiation therapy: A type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body.

A type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body. Also called external radiation therapy.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.