^○Haruyuki Fukuchi¹, Toshiya Akatsu^2,3, Hiroshi Kusahara², Nao Takano³, Yutaka Ikenouchi², Michimasa Suzuki², Koji Kamagata², Osamu Abe¹, Shigeki Aoki² (1.Department of Radiology, University of Tokyo Hospital, Tokyo, Japan, 2.Department of Radiology, Juntendo University Graduate School of Medicine, Tokyo, Japan, 3.Department of Radiology, Juntendo University Hospital, Tokyo, Japan)

^○Kazuyuki Ito, Nozomi Hamasaki, Reiko Inaba, Takashi Shirato, Kazuhiko Doryo (Department of Radiology, Juntendo University Nerima Hospital)

^○Shunsuke Kazui¹, Haruo Isoda^1,2, Yasuo Takehara¹, Masaki Terada³, Takashi Izumi¹, Yasuo Sakurai⁴, Ryuta Saito¹, Shinji Naganawa¹ (1.Nagoya University Graduate School of Medicine, 2.Brain and Mind Research Center, 3.Iwata City Hospital, 4.Department of Medical Technique, Nagoya University Hospital)

^○Tenma Takahashi, Masahiro Enzaki, Masanori Komi (Faculty of Medicine, University of Miyazaki hospital)

^○Kenji Furukawa¹, Tsuyoshi Nikaido², Koki Yamamoto¹ (1.Kushiro Kojinkai Memorial Hospital, 2.Kushiro Neuro Surgery)