*Tomoko Maekawa¹, Masaaki Hori^1,2, Kouhei Kamiya^1,2, Akifumi Hagiwara¹, Katsuhiro Sano¹, Koji Kamagata¹, Takuma Kodama³, Yuzaburo Shimizu³, Mario Suzuki³, Osamu Akiyama³, Akihide Kondo³, Shigeki Aoki¹ (1. Department of Radiology, Juntendo University School of Medicine)

*Ryo Ueda¹, Junichi Hata² (1. Office of Radiation Technology, Keio University Hospital, 2. Faculty of Health Sciences, Division of Radiological Sciences, Tokyo Metropolitan University)

*Yuichi Suzuki¹, Toshihiro Hayashi¹, Osamu Abe¹ (1. Radiology center, The University oh Tokyo Hospital)

*Kazuhiro Takahashi¹, Fumiaki Sasaki¹, Kazuhiro Nakamura², Mamoru Katou¹, Toshibumi Kinoshita² (1. Department of Radiology and Nuclear Medicine, Akita Cerebrospinal and Cardiovascular Center)

*Tatsuya Makino¹, Ikuo Kimura^2,3, Rinako Iseki ¹, Atsushi Senoo¹ (1. Department of Radiological Sciences,Graduate School of Human Health Sciences,Tokyo Metropolitan University,Tokyo,Japan, 2. Department oh Rehabilitation Medicine,The Jikei University School of Medicine, 3. Department of Rehabilitation Medicine,Izumi Memorial Hospital)

*Keiya Kandori¹, Junichi Hata^1,2,3,4, Saki Kodama^5,6, Akira Toga³, Narihito Nagoshi⁵, James Hirotaka Okano⁴, Hideyuki Okano^2,3 (1. Graduate School of Human Health Sciences, Tokyo Metropolitan University, 4. The Jikei Univerisity of Medicine, 5. Department of Forensic Medicine, Saitama Medical University, Saitama, 6. Tokyo Medical Examiners Office, Tokyo)

*Mikihiro Kudo¹, Syo Murata¹, Yasuhiko Tatibana² (1. Department of Radiological Sciences, Graduate Division of Health Sciences, Komazawa University)