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External Beam Radiation Therapy
The University of Wisconsin Paul P. Carbone Comprehensive Cancer Center offers external beam radiation therapy to patients who need it.
External beam radiation therapy is the most common type of radiation therapy.
About External Beam Radiation Therapy
External beam radiation therapy is the most common type of radiation therapy.
About External Beam Radiation Therapy
Beams from special X-ray machines, called linear accelerators (below left) or tomotherapy machines (below right), are aimed at the tumor from outside the body. During your treatment, a beam of radiation (high-energy x-rays or electrons) is directed through the skin to destroy cancerous cells.
Treatment Duration
Treatments are usually given five days a week and last approximately 15-30 minutes, over three to seven weeks. How often and how long you are treated varies on a case-by-case basis.
 Linear accelerator
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 Tomotherapy machine
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