Nao Kajihara¹, Kouki Hayasaka¹, Susumu Takano¹, Syuhei Shibukawa¹, Makoto Obara³, Masami Yoneyama³, Tetsu Niwa², Tomohiko Horie¹ (1.Department of Radiology Tokai University Hospital, 2.Radiology Tokai University Hospital, 3.Healthcare Department Philips Electronics Japan)

Hiroshi Uezono, Yuhei Otsuka, Shah Sakamura, Yumiko Iida (Tokay University Oiso Hospital Radiation technology department)

Kojiro Ono^1,2, Takayuki Sakai³, Yasuhiro Oikawa⁴, Akira Shirayama¹, Atsushi Senoo² (1.Department of Radiology, Chiba Children's Hospital, 2.Department of Radiological Science, Graduate School of Human Health Science, Tokyo Metropolitan University, 3.Department of Radiology, Eastern Chiba medical center, 4.Department of Orthopedics, Chiba Children's Hospital)

Ryoichi Kodama, Takeshi Ideguchi, Satoru Koura, Toshimasa Fujishita, Makoto Ochi (Department of Radiology, Nagasaki Kita Hospital)

Yumi Koizumi, Masaru Sonoda, Hideki Nagatomo (Seirei Sakura Citizen Hospital Division of Radiology)

Akio Hiwatashi¹, Osamu Togao¹, Koji Yamashita¹, Kazufumi Kikuchi¹, Ryo Somehara¹, Ryotaro Kamei¹, Masami Yoneyama², Hiroshi Honda¹ (1.Department of Clinical Radiology, 2.Philips Medical Systems Japan)

Tsuyoshi Nikaidou¹, Kenji Furukawa², Kouki Yamamoto² (1.Department of Radiology, Social Medical Coporation Kojinkai Kushiro Neurosurgery, 2.Department of Radiology, Kushiro Kojinkai Memorial Hospital)