The Monteris NeuroBlate™ System is a collection of MRI-compatible laser devices and accessories that create an MRI guided delivery of precision thermal therapy in the practice of neurosurgery. The NeuroBlate System components consist of: Families of gas-cooled Laser Delivery Probes (Probe) (SideFire & FullFire) to deliver controlled energy to a target zone. This application includes the smaller diameter SideFire Select and FullFire Select families of Probes; Probe Drivers (Advanced Probe Driver, Robotic Probe Driver) which allow the surgeon to precisely position, stabilize and manipulate a probe, endoscope or other device within the target zone; An Interface Platform, which attaches to the MRI system patient table and provides supporting electronics for the Probe Drivers and interconnections for the Laser Delivery Probes; A System Electronics Rack and Components, which includes necessary umbilicals, cables, penetration panels, and small hardware for system mechanical, electrical, and electronic operation; and A Control Workstation including the M-Vision™ software, which includes a user interface for procedure planning, interactive monitoring of NeuroBlate™ procedures, and interfaces to the MRI and hardware subsystems. This submission adds a line of 2.2mm Reduced Diameter Probes to the existing 3.3mm diameter probes. They will be known as the SideFire Select™ and FullFire Select™ Probes.