^○Hany A Fikry Eldawoody^1,2, Mohamed Kassem¹ (1.Neurosurgery Department, Mansoura University, Egypt, 2.Neurosurgery Department, Prince Mohammed bin Abdulaziz Hospital, Riyadh, Saudi Arabia)

^○Tomoyuki Tsumoto, Hiroaki Nakashima, Keisuke Tokunaga, Kenta Hara, Yuichi Miyazaki (Department of Endovascular Surgery, Kyushu Medical Center, Fukuoka, Japan)

^○Herrera Edgar, Tomoji Takigawa, Yasuhiko Nariai, Yusuki Inoue, Yoshiki Sugiura, Yosuke Kawamura, Ryotaro Suzuki, Issei Takano, Yoshihiro Tanaka, Masaya Nagaishi, Akio Hyodo, Kensuke Suzuki (The Department of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan)

^○Asuka Kropp, Takashi Izumi, Masahiro Nishihori, Tetsuya Tsukada, Mamoru Ishida, Ryousuke Oshima, Tomomi Kawaguchi, Masato Otawa, Shunsaku Goto, Mizuka Ikezawa, Toshihiko Wakabayashi (Department of Neurosurgery, University of Nagoya, Nagoya, Japan)

^○Simon Tupin¹, Shin-ichiro Sugiyama², Kaihong Yu¹, Yasutomo Shimizu¹, Takanobu Yagi³, Yoshihiro Okamoto⁴, Yasushi Matsumoto⁵, Makoto Ohta¹ (1.Institute of Fluid Science, Tohoku University, Sendai, Japan, 2.Department of Neuroanaethesia, Kohnan Hospital, Sendai, Japan, 3.Waseda University, Tokyo, Japan, 4.Division of Medical Devices, National Institute of Health Sciences, Tokyo, Japan, 5.Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Japan)

^○Ahmed Mansour¹, Shin-ichiro Sugiyama², Kuniyasu Niizuma³, Kenichi Sato¹, Yasushi Matsumoto¹, Teiji Tominaga⁴ (1.Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Japan, 2.Department of Neuroanaethesia, Kohnan Hospital, Sendai, Japan, 3.Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Biomedical Engineering, Sendai, Japan, 4.The Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan)

^○Tamer Hassan (Department of Neurosurgery, Alexandria University School of Medicine, Alexandria, Egypt)