^○Munemasa Okada¹, Kenichiro Ihara², Masahiro Tanabe², Takafumi Nomura², Etsushi Iida², Kouji Narikiyo², Tetsuro Komatsu², Katsuyoshi Ito² (1.Department of radiology, Yamaguchi University Hospital, 2.Department of Radiology, Yamaguchi University School of Medicine)

^○Kazuki Hashimoto, Shingo Hamaguchi, Yohsuke Tsuchiya, Hayato Tomita, Shinji Wada, Junji Moriya, Yukihisa Ogawa, Misako Nishio, Hidefumi Mimura (St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan)

^○Jitsuro Tsukada^1,2, Masanori Inoue², Ryosuke Sakurai³, Manabu Hase⁴, Manabu Misu⁴, Hideyuki Torikai², Nobutake Ito², Tadayoshi Kurata³, Hideki Yashiro⁴, Seishi Nakatsuka², Masahiro Jinzaki², Masahiro Okada¹ (1.Department of Radiology, Nihon University School of Medicine, Tokyo, Japan, 2.Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan, 3.Department of Diagnostic Radiology, Kawasaki Municipal Hospital, Kanagawa, Japan, 4.Department of Diagnostic Radiology, Hiratsuka Municipal Hospital, Kanagawa, Japan)

^○Toshiyuki Irie¹, Nobuyuki Takahashi² (1.Department of Radiology, Mito Kyodo General Hospital, 2.Department of Radiology, Tsukuba Memorial Hospital)

^○Teruyoshi Oda, Masakatsu Tsurusaki, Isao Numoto, Miyuki Wakana, Ayako Suzuki, Yukinobu Yagyu, Kazunari Ishii (Department of Radiology, Kindai University, Faculty of Medicine, Osaka, Japan)

^○Yoshihiro Toyama, Naoko Kawano, Yuko Ono, Yukiko Kawasaki, Hagemi Takeji, Kenji Kanetada (Department of Radiology, Takamatsu Red Cross Hospital, Kagawa, Japan)

^○Noriaki Sakamaoto¹, Kazuhiro Hayashi¹, Tetsu Nakamura¹, Mamoru Hase¹, Hiroaki Nakamura², Kunihiko Kaneda³ (1.Kakogawa Central City Hospital, Department of Diagnosis and Interventional Radiology, 2.Kakogawa Central City Hospital, Department of Cardiology, 3.Kakogawa Central City Hospital, Department of Digestive surgery)