https://www.healthcentral.com/article/how-external-beam-radiation-therapy-works
Prostate CancerTreatment

How External Beam Radiation Therapy Works

Man Recieving CAT Scan for Radiation Therapy Treatment
    Theodore L. DeWeese, M.D.

    Theodore L. DeWeese, M.D.

    Theodore L. DeWeese, M.D., is a professor in the department of oncology and urology at the Johns Hopkins University School of Medicine in Baltimore. He is the chairman of the department of radiation oncology and molecular radiation science.

    His laboratory research efforts primarily focus on the DNA-damage response of cancer cells (primarily prostate cancer) to ionizing radiation, including repair, cell cycle perturbations, and growth factor regulation.