Cyberknife is an alternative option to treat prostate cancer, as well as many other cancers such as lung, brain, spine, liver and pancreatic cancer. It is not a surgical procedure, but a form of stereotactic body radiation therapy (SBRT) and robotic-assisted radiosurgery that utilizes a computerized robot to automatically deliver high doses of radiation to the prostate gland. For men with prostate cancer, Cyberknife is recommended for men with cancer limited to the prostate, and men with low to moderate risk prostate cancer.