^○Shohei Harada^1,2, Atsushi Jogo¹, Akira Yamamoto¹, Hiroki Yonezawa¹, Takehito Nota¹, Kazuki Murai¹, Satoyuki Ogawa¹, Mariko Nakano¹, Ken Kageyama¹, Etsuji Sohgawa¹, Ryuichi Kita³, Norifumi Nishida⁴, Toshio Kaminou⁵, Yukio Miki¹ (1.Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, Osaka, Japan, 2.Department of Diagnostic Radiology, Yodogawa Christian Hospital, Osaka, Japan, 3.Department of Gastroenterology, Osaka Red Cross Hospital, Osaka, Japan, 4.Department of Diagnostic Radiology, Osaka Saiseikai Nakatsu Hospital, Osaka, Japan, 5.Department of Radiology, Tsukazaki Hospital, Hyogo, Japan)

^○Elly Arizono¹, Natsuhiko Shirota¹, Toru Saguchi¹, Jun Otaka¹, Taro Tanaka¹, Shoichi Ikenaga¹, Mika Muraki¹, Kazuhiro Saito¹, Shigeo Nishimata², Hisashi Kawashima², Masakazu Abe³, Katsutoshi Sugimoto³, Yukihisa Ogawa⁴, Hiroshi Nishimaki⁵ (1.Department of Radiology, Tokyo Medical University, Tokyo, Japan, 2.Department of Pediatrics, Tokyo Medical University, Tokyo, Japan, 3.Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan, 4.Department of Radiology, St. Marianna University School of Medicine, Kawasaki, Japan, 5.Department of Cardiovascular surgery, St. Marianna University School of Medicine, Kawasaki, Japan)

^○Shojiro Oka¹, Hiroyuki Kimura², Marina Shimizu², Hiroki Tanaka², Syuhei Norimoto², Yang Wang², Hiroaki Tanaka², Naoko Matsubara², Kazuna Kawabata², Makoto Kurimoto^2,3, Yoshiharu Shirakata³ (1.神戸市立医療センター中央市民病院　放射線診断科, 2.Department of Diagnostic Radiology, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan, 3.Department of Gastrointestinal Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan)

^○Satoshi Tamura, Fumie Kashimi, Takaaki Maruhashi, Yutarou Kurihara, Yasushi Asari (Department of Emergency and Critical Care Medicine, Kitasato University)

^○Kotaro Yamamoto, Masayoshi Yamamoto, Takuya Hara, Suguru Hitomi, Mizuki Ozawa, Akiyoshi Suzuki, Ryusei Zako, Toshimasa Sugawara, Hiroshi Kondo, Hiroshi Oba (Department of Radiology, Teikyo University, Tokyo, Japan)