^○Kenji Murakami, Chie Tsuruta, Kimio Kamada (Diagnostic Radiology, Hakodate Goryokaku Hospital,Hokkaido,Japan)

^○Yusuke Tsuji, Shunsuke Asai, Hiroshi Miura, Yoshitomo Nakai, Toshiyuki Okamoto, Yosuke Maehara, Yasuyuki Yamahana, Naoki Noguchi, Tatsuya Hirota, Kei Yamada (Department Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan)

^○Sho Maruyama¹, Shinya Kakehata¹, Soichiro Tatsuo¹, Fumiyasu Tsushima¹, Nina Sakashita¹, Chihiro Yotsuya¹, Saya Iida¹, Sayuri Tatsuo¹, Hiromasa Fujita¹, Daisuke Chinda², Tatsuya Mikami², Hirotake Sakuraba², Shinsaku Fukuda², Shingo Kakeda¹ (1.Radiology, Hirosaki University school of medicine, Hirosaki, Japan, 2.Gastroenterology and Hematology, Hirosaki University school of medicine, Hirosaki, Japan)

^○Akinori Harada, Jun-Ichi Nishimura, Yasushi Aoyagi, Yuichiro Takamatsu, Koichi Ishitaki, Akiyoshi Yamashita, Tetsuhisa Yamada (The department of Interventional Radiology, Japanese Red Cross medical center, Tokyo, Japan)

^○Yoko Uchikawa¹, Masashi Kuramochi¹, Masahide Takahashi¹, Miki Yoshida², Sota Masuoka², Hideo Ichimura³ (1.The Department of Radiology, Hitachi General Hospital, Ibaraki, Japan, 2.The Department of Radiology, University of Tsukuba Hospital, Ibaraki, Japan, 3.The Department of Thoracic surgery, Hitachi General Hospital, Ibaraki, Japan)