CyberKnife Center of Chicago uses a state-of-the-art robotic Radiosurgery system designed to treat cancerous and benign tumors and lesions in the head, neck and body with sub-millimeter accuracy and without incision or sedation. It is the first center in the Chicago area to house the next-generation CyberKnife System. CyberKnife Center of Chicago, a service of Elmhurst Memorial Hospital, will begin treating patients in August.