Prostate Cancer Radiation Treatment Radiation therapy uses high energy radiation to kill cancer cells. Radiation therapy may be used for prostate cancer treatment. In one of the methods, radiation therapy is used to limit the chance of prostate cancer coming back after a cancer surgery. For more information please visit this website. in Public bookmarkswith prostate_cancerprostate_cancer_radiation_treatmentradiation_treatmentby 6 users Note: Radiation therapy uses high energy radiation to kill cancer cells. Radiation therapy may be used for prostate cancer treatment. In one of the methods, radiation therapy is used to limit the chance of prostate cancer coming back after a cancer surgery. For more information please visit this website.