Ken Takahashi^1,2, Tatsufumi Nomura^1,3, Yoshinori Kurauchi^1,2, Toshiyuki Onda^1,3, Shigeru Inamura^1,3, Tadashi Nonaka^1,3, Masahiko Daibou^1,3 (1.Sapporo Shiroishi Memorial Hospital Neuroendovascular therapy center, Japan, 2.Sapporo Shiroishi Memorial Hospital Department of Neurology, Japan, 3.Sapporo Shiroishi Memorial Hospital Department of Neurosurgery, Japan)

Yusuke Sakata¹, Hirokatsu Kimura^1,2, Jyunki Fukumoto^1,2, Mami Takahashi^1,2, Azusa Aoyama^1,2, Mariko Hokari², Kanako Sekiya², Masafumi Toriyabe², Hiroaki Nozaki², Masayoshi Tada², Aki Sato², Kenichi Morita¹, Shuichi Igarashi² (1.Department of Cerebrovascular Medicine, Niigata City General Hospital, Japan, 2.Department of Neurology, Niigata City General Hospital, Japan)

Nobuaki Yamamoto¹, Kazutaka Kuroda¹, Yuki Yamamoto¹, Yuishim Izumi¹, Izumi Yamaguchi², Shu Sogabe², Masaaki Korai², Kenji Shimada², Yasuhisa Kanematsu², Yasushi Takagi² (1.Department of Neurology, Tokushima University Hospital, Japan, 2.Department of Neurosurgery, Tokushima University Hospital, Japan)

Tomoaki Miyake¹, Ryoichi Inoue², Shintaro Toda¹, Ken Yasuda¹, Yukihiro Yamao³, Takakuni Maki¹, Ryosuke Takahashi¹ (1.Department of Neurology, Kyoto University Graduate School of Medicine, Japan, 2.U.S. Naval Hospital Yokosuka, Japan, 3.Department of Neurosurgery, Kyoto University Graduate School of Medicine, Japan)

Yuu-ichi Kira, Daisuke Kondo, Kazutaka Sonoda, Masahito Tanaka, Masakazu Kawajiri (Department of Neurology Saiseikai Fukuoka General Hospital, Japan)