^○Hirohito Kan¹, Nobuyuki Arai¹, Masahiro Takizawa², Harumasa Kasai¹, Satoshi Tsubokura¹, Yuta Nishiwaki¹, Kyosuke Mizuno¹, Masato Yamada¹, Yasujiro Hirose¹ (1.Department of Radiology, Nagoya City University, 2.Healthcare Business Unit, Hitachi, Ltd.)

^○Shinichi Sakamoto¹, Tetsuya Yoneda², Taro Shimono¹, Taro Tsukamoto¹, Yuriko Suzuki³, Yutaka Katayama⁴, Eiji Yamada⁴, Yukio Miki¹ (1.Departments of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, Osaka, Japan, 2.Department of Medical Physics in Advanced Biomedical Sciences, Kumamoto University Graduate School of Health Sciences, 3.Philips Electronics Japan, Ltd., 4.Department of Radiological Technology, Osaka City University Hospital)

^○Hideto Toyoshima, Kazuhiro Nakamura, Masanobu Ibaragi, Kazuhiro Takahashi, Toshibumi Kinoshita (Akita Research Institute of Brain and Blood Vessels)

^○Yohei Ikebe, Hideki ishimaru, Reiko Ideguchi, Minoru Morikawa, Masataka Uetani (Nagasaki University)

^○Hideki Ishimaru, Yohei Ikebe, Minoru Morikawa, Reiko Ideguchi, Masataka Uetani (Nagasaki University)

^○Toshiki Wakayama^1,2, Masahiro Ida¹, Katsutoshi Murata³, Toshiyuki Onodera¹, Takashi Ueda¹, Fumiaki Kawakami¹, Atsushi Senoo², Terumi Tabei¹ (1.Department of Radiology, Ebara Hospital, Tokyo Metropolitan Health and Medical treatment corporation, 2.Tokyo Metropolitan University, Gradutate school of Human health sciences, Department of Radiological science, 3.Siemens healthcare japan, Department of research and collaboration)

^○Minako Azuma¹, Toshinori Hirai¹, Kazunari Maekawa², Atsushi Yamashita², Masahiro Enzaki¹, Yoshihito Kadota¹, Yujiro Asada², Kiyotaka Yokogami³, Hideo Takeshima³ (1.Departments of Radiology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan, 2.Departments of Pathology , Faculty of Medicine, University of Miyazaki, Miyazaki, Japan, 3.Departments of Radiology Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan)