作者单位:Yonsei Univ, Ctr Clin Imaging Data Sci Ctr, Res Inst Radiol Sci, Dept Radiol,Coll Med, 50-1 Yonsei[1]Vet Affairs San Diego Healthcare Syst, Dept Radiol, 3350 La Jolla Village Dr, San Diego, CA 92161[2]Yonsei Univ, Sch Elect & Elect Engn, 50 Yonsei Ro, Seoul 03722, South Korea[3]