Cyberknife is a robotic method of delivering radiation therapy.  Listen to this 58 minute discussion about how radiation kills prostate cancer and whether Cyberknife is a good treatment for both local and advanced stage prostate cancer.  Discussants are Seth Blacksburg, MD radiation oncologist from NYU/Withrop Medical Center in New York City and Darryl Mitteldorf, LCSW oncology social worker from Malecare Cancer Support  https://malecare.org