1. National Cancer Center Hospital Department of Neurosurgery and Neuro-Oncology, , Tokyo , Japan
2. National Cancer Center Hospital Department of Diagnostic Pathology, , Tokyo , Japan
3. National Cancer Center Hospital Department of Diagnostic Radiology, , Tokyo , Japan
4. National Cancer Center Hospital Department of Radiation Oncology, , Tokyo , Japan
5. Juntendo University Faculty of Medicine Department of Brain Disease Translational Research, , Tokyo , Japan