1. Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
2. Division of Radiological Technology, Nagoya University Hospital, Nagoya, Aichi, Japan
3. Division of Radiological Technology, Fujita Health University Okazaki Medical Center, Nagoya, Aichi, Japan
4. Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan