April 23, 2014 — Researchers in Zurich, Switzerland, have successfully used focused ultrasound for the first time to noninvasively ablate part of a recurrent glioma tumor through a patient’s intact skull. The procedure was performed to assess the feasibility and safety of focused ultrasound in treating brain tumors; it was not intended to demonstrate efficacy. The procedure was conducted using InSightec's Exablate Neuro system.