Fig. 1From: Study protocol for OptimalTTF-2: enhancing Tumor Treating Fields with skull remodeling surgery for first recurrence glioblastoma: a phase 2, multi-center, randomized, prospective, interventional trialSR-surgery configuration shown. The central burrhole is placed directly over the tumor or tumor resection cavity. Each of the five burrholes is 15 mm in diameterBack to article page