^○Yuko Sato¹, Izuru Matsuda², Masaya Ishii², Aiko Suzuki², Arao Murakami², Satoru Kamio², Hiroaki Koyama², Akiyoshi Hamada², Takana Hayashi¹, Go Shirota¹, Tomoko Takayanagi³, Tomoko Maekawa³, Yoshie Sato⁴, Haruomi Yamaguchi³, Saori Shiota⁵ (1.The Department of Radiology, Nerima Hikarigaoka Hospital, Tokyo, Japan, 2.The Department of Diagnostic Radiology, Kanto Rosai Hostpital, Kanagawa, Japan, 3.The Department of Radiology, the University of Tokyo Hospital, Tokyo, Japan, 4.The Department of Radiology, Showa General Hospital, Tokyo, Japan, 5.The Department of Radiology, Teikyo University School of Medicine, Tokyo, Japan)

^○Tomohisa Hashimoto, Hiroaki Maeda, Erika Matsusiro, Chika Tanaka, Setsu Sakamoto, Daisuke Takenaka (Department of Diagnostic Radiology, Hyogo Cancer Center, Hyogo, Japan)

^○Kimiyoshi Mizunuma¹, Yousuke Tsuchiya², Shinji Wada², Tsuyoshi Miura³, Munehiro Sugiyama³, Toshiya Kariyasu⁴, Shinji Fujizuka⁵, Shunsuke Sugawara⁵, Kazuhiko Morikawa⁶, Taiki Fukuda⁶, Kouji Munakata⁶, Makiko Obara⁷, Koki Kato⁸, Takaaki Sakamoto⁹ (1.Departments of Radiology,Nasu Red Cross Hospital,Tochigi,Japan, 2.Departments of Radiology,St. Marianna University School of Medicine,Kanagawa,Japan, 3.Departments of Radiology,Tokyo Women s Medical University Yachiyo Medical Center,Chiba,Japan, 4.Departments of Radiology,Kyorin University School of Medicine,Tokyo,Japan, 5.Departments of Radiology,National Cancer Center Hospital,Tokyo,Japan, 6.Departments of Radiology,Jikei University School of Medicine,Tokyo,Japan, 7.Departments of Radiology,Iwate Medical University,Iwate,Japan, 8.Departments of Radiology,Saiseikai Utsunomiya Hospital,Tochigi,Japan, 9.Department of Emergency, Kyorin University School of Medicine,Tokyo,Japan)

^○Muneaki Ohshita^1,3, Suguru Annen¹, Satoshi Kikuchi¹, Jun Takeba¹, Hiroaki Tanaka², Yutaka Tejima³ (1.Department of Aeromedical Services for Emergency and Trauma Care, Ehime University Graduate School of Medicine, Ehime, Japan, 2.Department of Radiology, Ehime University Graduate School of Medicine, Ehime, Japan, 3.Kobe University Graduate School of Law, Hyogo, Japan)

^○Marie Takahashi^1,2, Mitsuhiro Kishino¹, Koichiro Kimura¹, Naruka Koide¹, Yusuke Ogiwara¹, Yukihisa Saida¹, Ukihide Tateishi¹ (1.Department of Radiology, Tokyo Medical and Dental University, Tokyo, Japan, 2.The Shock Trauma and Emergency Medical Center, Tokyo Medical and Dental Univ ersity Hospital, Tokyo, Japan)

^○Noboru Maeda, Atsuhiko Sakamoto, Yasuhiro Nakaya, Akiko Nakayama, Tomohiro Wataya, Natsuko Atsukawa, Junichiro Tanaka, Mio Sakai, Katsuyuki Nakanishi (Department of Diagnostic and Interventional Radiology, Osaka International Cancer Institute, Osaka, Japan)