External Beam Radiation Therapy (EBRT)
After carefully mapping the prostate, a radiation oncologist can administer external beam radiation therapy. During treatment, a machine focuses a beam of ionizing irradiation at the target tissue. This damages genetic material in all dividing cells within the target lesion. Cells are prevented from growing and they eventually die.
Patients undergoing EBRT generally receive treatment at an outpatient center five days a week for six-to-eight consecutive weeks.
EBRT is an option when the cancer is confined to the prostate and may be used alone or combined with medications or surgery. EBRT can be curative if the cancer has not gone beyond the prostate.