RecruitingDevice studyFocused Ultrasound Pallidotomy for Dyskinetic Cerebral Palsy in Pediatric and Young Adult SubjectsThe primary objective of the proposed study is to evaluate the safety of ExAblate Transcranial MRgFUS as a tool for creating bilateral or unilateral lesions in the globus pallidus (GPi) in patients with treatment-refractory secondary dystonia due to dyskinetic cerebral palsy