1. Department of Radiology, Kouseiren Takaoka Hospital, Takaoka, Toyama, Japan
2. Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
3. Department of Neurosurgery and Restorative Neuroscience, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Aich, Japan
4. Department of Radiology, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan