^○Daisuke Abo¹, Takeshi Soyama¹, Toshiyuki Nagai², Ryo Morita¹, Yuki Yoshino¹, Naoya Kinota¹, Kohsuke Kudo³ (1.Department of Diagnostic and Interventional Radiology, Hokkaido University H ospital, 2.Department of Cardiovascular medicine, Hokkaido University Graduate School Medicine, Sapporo, Japan, 3.Department of Diagnostic Imaging, Hokkaido University Graduate School Medicine, Sapporo, Japan)

^○Toshihiro Horii¹, Ayumi Yamada², Mitsuhiro Kishino¹, Yusuke Ogihara³, Shuichiro Nakamintato¹, Marie Takahashi¹, Kenji Nishida², Koichiro Kimura¹, Yukihisa Saida¹, Ukihide Tateishi¹ (1.Diagnostic Radiology, Tokyo Medical and Dental University, 2.Tsuchiura Kyodo General Hospital, Tsuchiura cyty, Japan, 3.Sano Kosei Genaral Hospital, Sano city, Japan)

^○Seigo Happo¹, Shohei Mizushima¹, Izumi Tanaka², Takeshi Kashimura¹, Takahiko Mine¹ (1.Department of Radiology, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan, 2.Department of Radiology, Nippon Medical School, Tokyo, Japan)

^○Ryo Morita¹, Daisuke Abo¹, Naoya Kinota¹, Takeshi Soyama¹, Yuki Yoshino¹, Satonori Tsuneta¹, Kohsuke Kudo² (1.Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, 2.Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine)

^○Nobuyuki Homma (The Department of Vascular Surgery, Japan Community Health care Organization Sendai Hospital, Miyagi, Japan)