[1] China Med Univ, Affiliated Hosp 1, Dept Radiol, Shenyang, Peoples R China
[2] Univ Louvain, Dept Med Diagnost Sci, Sect Radiol, Louvain, Belgium
[3] Jiangsu Prov Acad Tradit Chinese Med, Nanjing, Peoples R China
[4] Shandong Acad Med Sci, Radiat Med Inst, Jinan, Peoples R China