^○Yoshitaka Tamura¹, Seijiro Inoue¹, Koichi Kawanaka¹, Hiromitsu Hayashi², Yoichi Yamashita², Hideo Baba² (1.Department of Diagnostic Radiology, Kumamoto University Hospital, Kumamoto, Japan, 2.Gastroenterological Surgery, Kumamoto University Hospital, Kumamoto, Japan)

^○Eisuke Shibata¹, Hidemasa Takao¹, Masahumi Kaiume², Naoki Okura³, Osamu Abe¹ (1.The Department of Radiology, The University of Tokyo HospitalH, Tokyo, Japan, 2.Department of Radiology, Tokyo Women's Medical University Medical Center East, Tokyo, Japan, 3.Department of Radiology, Mita Hospital, International University of Health and Welfare, Tokyo, Japan)

^○Kei Shibuya¹, Masaya Miyazaki¹, Hiroyuki Tokue¹, Soma Kumasaka¹, Hisao Yajima¹, Kenichiro Araki², Norio Kubo², Ken Shirabe² (1.Department of Diagnostic and Interventional Radiology, Gunma University Hospital, Maebashi, Japan, 2.Department of Hepatobiliary and pancreatic surgery, Gunma University Hospital, Maebashi, Japan)

^○Satoyuki Ogawa, Akira Yamamoto, Shohei Harada, Hiroki Yonezawa, Takehito Nota, Kazuki Murai, Mariko Nakano, Ken Kageyama, Etsuji Sohgawa, Atsushi Jogo, Yukio Miki (Department of Diagnostic and Interventional Radiology Osaka City University Graduate School of Medicine, Osaka, Japan)

^○Chihiro Itou, Miyuki Sone, Shunsuke Sugawara, Yasuyuki Ohnishi, Shintaro Kimura, Shinji Fujitsuka, Haruto Sugawara, Yasuaki Arai, Masahiko Kusumoto (The Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan)

^○Atsushi Ugajin, Hiroyasu Nakamura, Yohei Koyashiki, Shigeyoshi Kijima, Naoki Kunitomo, Tomohiro Kikuchi, Hideharu Sugimoto (Department of Radiology, Jichi Medical University, Tochigi, Japan)