^○Shoko Tanaka, Yumiko Kuromi, Nozomu Matsuda, Megumi Yasuda, Takenobu Murakami, Yoshikazu Ugawa (Department of Neurology, Fukushima Medical University)

^○Tomohiko Inoue¹, Keiichi Mizushima², Akihiko Kudo², Shouki Sato², Tomoka Sato², Ryouji Naganuma², Nao Uwadoko², Shinichi Shirai², Ikuko Takahashi², Masaaki Matsushima², Ichiro Yabe², Taisuke Harada³, Kousuke Kudo³, Hidenao Sasaki² (1.School of Medicine,Hokkaido University, 2.Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, 3.Diagnostic and Interventional Radiology, Hokkaido University Hospital)

^○Marina Ushio¹, Teppei Komatsu², Tomomichi Kitagawa², Satoshi Matsushima³, Kenichiro Sakai², Yuka Terasawa², Shusaku Omoto², Hidetaka Mitsumura², Yasuyuki Iguchi² (1.The Jikei University School of Medicine, 2.Department of Neurology, The Jikei University School of Medicine, 3.Department of Radiology, The Jikei University School of Medicine)

^○Wataru Satou, Masanori Ishikawa, Toshiyuki Tezuka, Hiroyuki Tabe (Department of Neurology, Niigata Prefectural Central Hospital)

^○Satoko Shiomi, Shusaku Omoto, Taiji Mukai, Masako Ikeda, Yuka Terasawa, Kenichiro Sakai, Hidetaka Mitsumura, Chizuko Toyoda, Yasuyuki Iguchi (The Jikei University School of Medicine)

^○Daiki Tanaka, Azusa Nagai, Takumi Tsuchida, Kiyomi Kuroshima, Shigehisa Ura, Kazuto Yoshida, Isao Ota (Japanese Red Cross Asahikawa Hospital)

^○Kazuya Igarashi, Hiroyuki Tabe, Masanori Ishikawa, Toshiyuki Tezuka (Niigata Prefectural Central Hospital)