MRI-Guided Focused Ultrasound Feasibility Study for Brain Tumors

In this non-randomized feasibility study, FUS under MRI-guidance and thermometry will be given through intact human skull to brain tumor in up to ten (10) subjects. These subjects will be followed over a 3-month period with contrast MRI and clinical exams. The objectives are: 1. To evaluate the safety of ExAblate TcMRgFUS treatment delivered through intact human skull to the brain, during the treatment, and during the follow-up period of 3 months. 2. To evaluate the effect of thermal ablation in the target tumor with contrast MR imaging to identify viable tumor, and non-viable thermally ablated tissue.