^○KOBAYASHI NAOTO¹, TOSHIFUMI MUKAIJYO¹, AKIHIRO FUJINO¹, KAZUHIDE YONEDA¹, SAKI OHNISHI¹, HAYATO NOSE¹, MASAHIRO KOGAME¹, MASAKO TAKI¹, KYOU YAMASHITA¹, SYUSAKU YOSHIDA² (1.Department of Radiology, Tokushima Prefectural Central Hospital, Tokushima, Japan, 2.Department of Radiology, Tokushima Prefectural Miyoshi Hospital, Tokushima, Japan)

^○YURI KON¹, Nozomu Shima¹, Seigou Okuma¹, Reiko Kumano¹, Takayuki Yamada¹, Junichi Matsumoto², Hidefumi Mimura³ (1.Department of radiology, Yokohama seibu city hospital, Yokohama, Kanagawa, Japan, 2.Departmentof Emergency Medicine, St. Marianna university, Kawasaki, Kanagawa, Japan, 3.Department of Radiology, St. Marianna university, Kawasaki, Kanagawa, Japan)

^○MASAHISA NAKAMURA¹, HIDEAKI YAKUSHIJI², HIROSHI YUKIMOTO¹, SATOSHI OKUBO¹, KOJI AMANO², MOTOHIKO YAMADA², TAKAHISA SAKISUKA¹, HIROMITSU SUMIKAWA¹, AKIHIRO KURIU¹ (1.Department of Diagnostic Radiology, Sakai City Medical Center, 2.Emergency Surgery, Sakai City Medical Center)

^○NORITAKA SEINO¹, NARUKI MIZOBUCHI², HIROMI MATSUZAKA¹, MAKOTO HASEGAWA¹, YOSHIMITSU OHGIYA², MINORU HONDA³ (1.Department of Radiology, Showa University Koto Toyosu Hospital, Tokyo, Japan, 2.Department of Radiology, Showa University School of Medicine, Tokyo, Japan, 3.Totsuka Kyoritsu Daini Hospital, Kanagawa, Japan)

^○HIROYUKI TOKUE¹, HIDEO MORITA², MASAYA MIYAZAKI¹, KEITH SHIBUYA¹, YOSHIHIRO MATSUDA¹, SOUMA KUMASAKA¹, YOSHIYA WATANABE¹, RYOSUKE TAKAHASHI¹, MASASHI EBARA², MAKOTO AOKI³, AZUSA TOKUE¹, YOSHITO TSUSHIMA¹ (1.Department of Diagnostic and Interventional Radiology, Gunma University Hospital, Gunma, Japan, 2.Department of Diagnostic Radiology, Maebashi Red Cross Hospital, Gunma, Japan, 3.Department of Emergency Medicine, Gunma University Hospital, Gunma, Japan)

^○HIROAKI TANAKA, NAOTO kAWAGUCHI, TERUHITO MOCHIZUKI (Department of radiology ,Ehime university graduate school of medicine,Ehime,Japan)