^○Motoaki Higuchi¹, Yoshiro Chiba¹, Setsuo Kuraoka², Mayumi Shinonaga², Kisato Mitomi², Syuhei Suzuki², Joe Toda³, Masanori Inoue⁴ (1.The Endovascular treatment group, Mito Saiseikai General Hospital, Ibaraki, Japan, 2.The Department of Cardiovascular Surgery, Mito Saiseikai General Hospital, Ibaraki, Japan, 3.The Department of Radiology, Mitsui Memorial Hospital, Tokyo, Japan, 4.The Department of Radiology, Keio University School of Medicine, Tokyo, Japan)

^○Masahiro Inagaki, Shigeo Ichihashi, Satoru Nagatomi, Shinichi Iwakoshi, Kimihiko Kichikawa (Nara Medical University)

^○Akimitsu Tanaka (The department of Cardiology, Nagoya Tokushukai General Hospital, Nagoya, Japan)

^○Hidehiko Taguchi¹, Kaoru Myoutinn², Katutoshi Takayama¹, Takeshi Wada¹, Ichirou Nakagawa³, Hiroyuki Nakse³, Kimihiko Kichikawa² (1.Department of Interventional Neuroradiology and Radiology, Koseikai Takai Hospital, Tenri, Japan, 2.奈良県立医科大学放射線・核医学科、IVRセンター, 3.奈良県立医科大学　脳神経外科)

^○Koichiro Kimura¹, Mituhiro Kishino¹, Toshihiro Horii¹, Kenzi Nishida¹, Marie Takahashi¹, Yusuke Ogiwara², Jun Oyama¹, Shuichiro Nakaminato¹, Yoshio Kitazume¹, Ukihide Tateishi¹ (1.Department of Diagnostic Radiology, Tokyo Medical and Dental University, Tokyo, Japan, 2.Department of Diagnostic Radiology, Sanokousei general hospital, Tochigi, Japan)