{"groups":[{"description":"ExAblate 2000: MR guided focused ultrasound","id":"FG000","title":"ExAblate Treatment Arm"},{"description":"ExAblate 2000: MR guided focused ultrasound sham","id":"FG001","title":"ExAblate Sham Control Arm"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"87"},{"groupId":"FG001","numSubjects":"28"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"65"},{"groupId":"FG001","numSubjects":"21"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"22"},{"groupId":"FG001","numSubjects":"7"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}],"preAssignmentDetails":"Of the 147 subjects enrolled (signed consent), 23 subjects failed additional study requirements and 9 subjects exited after randomization but prior to treatment"}