5fa18665_surgery___Stanford_Health_Care__Features
[Adavantages] Frameless design provides the flexibility to perform radiosurgery in either a single day or over multiple days which allows your treating physicians to decide the safest and most effective course of CyberKnife treatment. When constrained by frame-based systems requiring treatment in one day, some tumors are untreatable, or would require under-dosing of the tumor (risking tumor recurrence) or over-dosing of critical structures (risking injury to the brain). [Features] 
Flexible, frameless system, allowing single session or multi-session treatments
Features/Advantages - Cyberknife Radiosurgery | Stanford Health Care
Features