Dictionary of Cancer Terms
View in Spanish: Radioterapia estereotáctica de haz externo
Stereotactic external-beam radiation therapy (STAYR-ee-oh-TAK-tik RAY-dee-AY-shun THAYR-uh-pee)
A type of external radiation therapy that uses special equipment to position the patient and precisely deliver radiation to a tumor. The total dose of radiation is divided into several smaller doses given over several days. Stereotactic external-beam radiation therapy is used to treat brain tumors and other brain disorders. It is also being studied in the treatment of other types of cancer, such as lung cancer. Also called stereotactic radiation therapy and stereotaxic radiation therapy.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.