^○Akihiko Mitsutake¹, Hideyuki Matsumoto¹, Keiko Hatano¹, Koreaki Irie², Nobuhiro Tsukada³, Hideji Hashida¹ (1.Japanese Red Cross Medical Center, Department of Neurology, 2.Japanese Red Cross Medical Center, Department of Neurosurgery, 3.Japanese Red Cross Medical Center, Department of Hematology)

^○Yoshitaka Yamaguchi^1,2, Masatoshi Koga³, Yuki Nakamura^2,4, Naoki Makita², Yoshiaki Morita⁵, Toshihiro Ide², Shinichi Wada², Masafumi Ihara⁶, Kazunori Toyoda² (1.Department of Neurology,Yamagata Prefectural Central Hospital, 2.Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, 3.Division of Stroke Care Unit, National Cerebral and Cardiovascular Center, 4.Department of Neurology, Sapporo Medical University, 5.Department of radiology, National Cerebral and Cardiovascular Center, 6.Department of Neurology, National Cerebral and Cardiovascular Center)

^○Takuya Nishimura¹, Satoshi Suda¹, Jyunya Aoki¹, Yousuke Hujisawa¹, Yuuji Nishi¹, Tetsurou Sekine^1,2, Kazumi Kimura¹ (1.Department of Neurological Science, Nippon Medical School Graduate School of Medicine, 2.Department of Radiology, Nippon Medical School Graduate School of Medicine)

^○Kenzo Sakurai¹, Yu Suzuki¹, Kenji Uchino¹, Kanako Mori¹, Yasuhiro Hasegawa² (1.Department of Neurology, Kawasaki Municipal Tama Hospital, 2.Department of Neurology, St. Marianna University of Medicine)

^○Ryo Chikuchi, Yoshinobu Amakusa, Youki Fukami, Katsushi Matsui, Kousi Matsuo, Hisayoshi Niwa (Kariya Toyota General Hospital)

^○Yoshio Sakiyama¹, Keita Inoue², Shinsaku Tsuji², Youichi Terashima² (1.Department of Neurology, Jichi Medical University, Saitama Medical Center, 2.Avenue Cell Clinic)

^○Eiji Imamura¹, Masahiro Nakamori¹, Yuta Maetani¹, Hayato Matsushima¹, Shinichi Wakabayashi² (1.Department of Neurology, SUISEIKAI KAJIKAWA HOSPITAL, 2.Department of Neurosurgery, SUISEIKAI KAJIKAWA HOSPITAL)