^○Shinichi Iwakoshi¹, Shigeo Ichihashi¹, Katsutoshi Takayama², Kimihiko Kichikawa¹ (1.Nara Medical University, Department of Radiology and Nuclear Medicine, IVR Center, 2.Takai hospital)

^○Norio Hongo (Department of Radiology, Faculty of Medicine, Oita University)

^○Hiroshi Yamamoto (Sumitomo hospital IVR center)

^○Akira Adachi¹, Shisaku Yata², Tsuyoshi Kawai³, Masayuki Endo², Shohei Takasugi², Kazumichi Tsukamoto², Yamamoto Shuichi², Kensuke Matsumoto³, Mika Kodani⁴, Jun Makishima⁵, Yasufumi Ohuchi⁶, Masayuki Hashimoto⁵, Shinya Fujii² (1.Department of Radiology, Sanin Rosai Hospital, Yonago, Japan, 2.Division of Radiology, Department of Pathophysiological Therapeutic Science, Faculty of Medicine, Tottori University, 3.Department of Radiology, Tottori prefectural Kosei Hospital, Kurayoshi, Japan, 4.Department of Radiology, Matsue City Hospital, Matsue, Japan, 5.Department of Radiology, Tottori Municipal Hospital, Tottori, Japan, 6.Department of Radiology, Matsue Red Cross Hospital, Matsue, Japan)