^○SHOJIRO OKA¹, HIROYUKI KIMURA¹, GENKI FUKUMOTO¹, HIROKI TANAKA¹, YANG WANG¹, HIROAKI TANAKA¹, NAOKO MATSUBARA¹, KAZUNA KAWABATA¹, MITSUNORI KANAGAKI¹, YUSUKE KAWASAKI², YOSHIHARU SHIRAKATA² (1.Department of Diagnostic Radiology, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan, 2.Department of Gastrointestinal Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan)

^○HIROYUKI YOSHITAKE, Tomoya Takami, Tomoyuki Yamaguchi (Department of surgery,KishiwadaTokusyuukai Hospital,Japan)

^○AKINORI HARADA, YOSUKE NOZAWA, KANA OISHI, KOICHI ISHITAKI, AKIYOSHI YAMASHITA, TETSUHISA YAMADA, JUNICHI NISHIMURA (Japanese Red Cross Medical Center, Tokyo, Japan)

^○NAOKAZU MIYAMOTO¹, Masaru Tomita¹, Akifumi Kajihara¹, Fumiko Namba¹, Syuji Adachi¹, Koji Sugimoto² (1.Department of Radiology, KITA-HARIMA MEDICAL CENTER, Ono, Japan, 2.Department of Radiology, Kobe University, Kobe, Japan)

^○MASAMI TAGUCHI¹, KAZUYA KAWASHIMA² (1.Department of Radiology of Hachinohe Red Cross Hospital,Hachinohe,Japan, 2.Department of Radiology,Iwate Medical collage,Iwate,Japan)

^○HIROKI IMADA, HIROSHI KAWADA, YUKITHI TANAHASHI, TETSURO KAGA, SYOMA NAGATA, TOMOHIRO ANDO, NOBUYUKI KAWAI, YOSIFUMI NODA, SATOSHI GOSHIMA, MASAYUKI MATSUO (Department of Radiology, Gifu University, Gifu, Japan)