Mamiko Fujikura, Shin Nakamura, Sakurako Asai, Tohru Kurabayashi (Department of Oral and Maxillofacial Radiology, Graduate school, Tokyo Medical and Dental University, Tokyo, JAPAN)

Kousuke Kitaguchi, Yuji Nakamoto, Takayoshi Ishimori, Masao Watanabe, Ayako Kato, Eitaro Kidera, Tomoaki Otani, Tsuneo Saga, Kaori Togashi (Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan)

Katsuya Mitamura¹, Yuka Yamamoto¹, nobuyuki kudomi², yukito maeda¹, yoshihiro nishiyama¹ (1.Department of Radiology, Faculty of Medicine, Kagawa University, 2.Department of Medical Physics, Faculty of Medicine, Kagawa University)

Keiichiro Tahara¹, Shingo Baba¹, Takuro Isoda¹, Yoshiyuki Kitamura¹, Ryo Somehara¹, Masayuki Sasaki², Hiroshi Honda¹ (1.Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, 2.Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan)

Satoko Suzuki^1,2, Yayoi Yamamoto², Tetsuo Yoshida² (1.Fuzisawa Medical Health Center, Kanagawa, Japan, 2.Department of Diagnostic and Interventional Radiology, Kanagawa Cancer Center, Kanagawa, Japan)

Hidenori Suzuki¹, Tsuneo Tamaki², Masami Nishio³, Shintaro Beppu¹, Nobuaki Mukoyama⁴, Daisuke Nishilkawa¹, Yusuke Koide¹, Hoshino Terada¹, Daisuke Nishikawa¹, Nobuhiro Hanai¹ (1.Department of Head and Neck Surgery, Aichi Cancer Center Hospital, Nagoya, Japan, 2.Department of East Nagoya Imaging Diagnosis Center, Nagoya, Japan., 3.Department of Radiology, Nagoya Positron Emission Tomography Imaging Center, Nagoya, Japan., 4.Deparment of Othorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan.)

Michiko Kubo¹, kaori Terazawa¹, Maki Otomo¹, Yukie Kageisi¹, Moriaki Yamanaka¹, Yoichi Otomi¹, Hideki Otsuka², Masafumi Harada¹ (1.Department of Radiology, Tokushima University Hospital, Tokushima, Japan, 2.Department of Medical Imaging/Nuclear Medicine,Tokushima University Graduate School, Tokushima, Japan)