School of Computer, Electronics and Information, Department of Electronics and Information Engineering, Guangxi University, Nanning City, P.R. China 530004;Department of Intelligent Image Information, Division of Regeneration and Advanced Medical Sciences, Graduate School of Medicine, Gifu University, Gifu, Japan 501-1194;School of Computer, Electronics and Information, Department of Electronics and Information Engineering, Guangxi University, Nanning City, P.R. China 530004;School of Computer, Electronics and Information, Department of Electronics and Information Engineering, Guangxi University, Nanning City, P.R. China 530004;Department of Radiology, Gifu University School of Medicine & Gifu University Hospital, Gifu, Japan 501-1194;Department of Intelligent Image Information, Division of Regeneration and Advanced Medical Sciences, Graduate School of Medicine, Gifu University, Gifu, Japan 501-1194;Department of Intelligent Image Information, Division of Regeneration and Advanced Medical Sciences, Graduate School of Medicine, Gifu University, Gifu, Japan 501-1194;Department of Radiology, Gifu University School of Medicine & Gifu University Hospital, Gifu, Japan 501-1194;Department of Radiology, Gifu University School of Medicine & Gifu University Hospital, Gifu, Japan 501-1194;Department of Radiology, Gifu University School of Medicine & Gifu University Hospital, Gifu, Japan 501-1194