Christina Andica¹, Akifumi Hagiwara^1,2, Misaki Nakazawa^1,3, Aki Hattori¹, Sho Murata¹, Nao Takano¹, Masaaki Hori¹, Shigeki Aoki¹ (1.Department of Radiology, Juntendo University School of Medicine, 2.Department of Radiology, Graduate School of Medicine, The University of Tokyo, 3.Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University)

Takashi Shizukuishi¹, Osamu Abe¹, Takahiro Shinozaki², Akihiko Wada¹, Haruyasu Yamada¹, Ryutaro Kohashi², Yoshiki Imamura² (1.Nihon University School of Medicine, Department of Radiology, 2.Nihon University School of Dentistry)

Tetsuro Sekine^1,2, Buck Alfred², Delso Gaspar², Ter Voert Edwin², Huellner Martin², Veit-Haibach Patrick², Warnock Geoffrey² (1.Department of Radiology, Nippon Medical School, 2.Department of nuclear medicine, University Hospital Zurich)

Yosuke Shike¹, Mika Kokubun¹, Takashi Konno¹, Hidekazu Yamazaki¹, Natsuru Kobiyama¹, Noriaki Tomura², Syunsuke Sato³ (1.Department of Radiology, Sothern Tohoku General Hospital, 2.Department of Neuroadiology, Sothern Tohoku General Hospital, 3.Department of Neurosurgery, Sothern Tohoku General Hospital)

Masakazu Shioda, Ken Masuyama, Syun Akimoto, Kazuya Akiyoshi (Teine Keijinkai Hospital)