^○Sung-Yu Chu (Chang Gung Memorial Hospital, Linkou, Taiwan)

^○AKIRA IKOMA, Motoki Nakai, Kodai Fukuda, Nobuyuki Higashino, Atsufumi Kamisako, Takao Koyama, Hirotatsu Satou, Tetsuo Sonomura (Dept. of Radiology, Wakayama medical University, Wakayama, Japan)

^○TOSHIYUKI IRIE¹, Nobuyuki Takahashi² (1.Department of Radiology, Tsukuba University Hospital Mito Clinical Education and Training Center, Mito Kyodo General Hospital, 2.Tsukuba University Hospital Mito Clinical Education and Training Center, Mito Kyodo General Hospital)

^○KOHEI TOKUYAMA¹, Hiro Kiyosue³, Yuzo Hori¹, Hirofumi Nagatomi², Mika Okahara⁴ (1.Department of Radiology, Nagatomi neurosurgical hospital, Oita, Japan, 2.Department of Neurosurgery, Nagatomi neurosurgical hospital, Oita, Japan, 3.Department of Radiology, Oita University Faculty of Medicine, Yufu, Japa, 4.Department of Radiology, Shinbeppu Hospital, Beppu, Japan)

^○JOICHI HEIANNA, Wataru Makino, Masafumi Toguchi, Junji Ito, Takuro Ariga, Kazuki Ishikawa, Takeaki Kusada, Yuko Iraha, Sadayuki Murayama (Departement of Radiology, University of the Ryukyus Graduate School of Medical Science, Okinawa, Japan)

^○YANQING ZHAO, Yusuke Matsui, Takao Hiraki, Toshihiro Iguchi, Kouji Tomita, Mayu Uka, Hideo Gobara, Susumu Kanazawa (Department of Radiology, Okayama University Medical School, Japan)

^○NATSUKO HAYASHI^1,2, HIROSHI MIURA¹, YOSHITO TAKEUCHI³, YUSUKE ARIMA⁴, MITSUAKI TODA⁴, TOSHIYUKI OKAMOTO², SYUNSUKE ASAI¹, KOJI SAKAI¹, TATSUYA HIROTA¹, KEI YAMADA¹ (1.Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan, 2.Department of Radiology, Osaka General Hospital of West Japan Railway Company, Osaka, Japan, 3.Department of Radiology, Fukuchiyama City Hospital, Kyoto, Japan, 4.Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan)