^○Masahiro Kawasaki¹, Eizou Umezawa¹, Takashi Fukuba², Kazuhiro Murayama³, Masayuki Yamada¹ (1.Graduate School of Health Sciences, Fujita Health University, 2.Department of Radiology, Fujita Health University Hospital, 3.School of Medicine, Fujita Health University)

^○Hirokazu Otsuka¹, Takashi Iwanaga¹, Kiyohisa Kamimura², Masanori Nakajo², Takashi Yoshiura² (1.Department of Radiological Technology, Kagoshima University Hospital, 2.Department of Radiology, Kagoshima University Graduate School of Medical and Dental Sciences)

^○Hajime Tamura¹, Tatsuo Nagasaka², Shunji Mugikura² (1.Division of Medical Physics, Tohoku University Graduate School of Medicine, 2.Department of Radiology, Tohoku University Hospital)

^○Takashi Iwasaki^1,2, Issei Fukunaga², Syo Murata^1,2, Kohei Tsuruta², Nozomi Hamasaki², Hideo Kawasaki², Nao Takano², Shuji Sato², Haruyoshi Hoshito², Saori Koshino², Ryusuke Irie², Michimasa Suzuki², Katsutoshi Murata³, Masaaki Hori^1,2, Shigeki Aoki^1,2 (1.Department of Radiology, Graduate School of Medicine, Juntendo University, 2.Department of Radiology, Juntendo University School of Medicine, 3.Siemens Healthcare K.K.)

^○Yoshikazu Kobayashi^1,2, Yoko Saito², Toshimitsu Kanda¹, Syunsuke Fujita¹, Yasushi Osanai¹ (1.ShinSapporo Neurosurgical Hosoital, 2.Hirosaki University Graduate School of Health Sciences)

^○Yasuhiro Fujiwara¹, Hirohiko Kimura², Syouta Ishida³, Masayuki Kanamoto³, Naoyuki Takei⁴, Tsuyoshi Matsuda⁵, Toshiki Adachi³ (1.Faculty of Life Sciences, Department of Medical Imaging, Kumamoto University, 2.Department of Radiology, University of Fukui, 3.Radiological Center, University of Fukui Hospital, 4.GE Healthcare Japan, 5.Iwate Medical University)

^○Hiroaki Kameiyama, Takashi Ogasahara, Kenichi Nakagawa (Department of Radiological Technology, Kurashiki Central Hospital)

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