[1] China Med Univ, Affiliated Hosp 1, Dept Radiol, Lab Med Imaging & Intervent Radiol, Shenyang 110001, Peoples R China
[2] China Med Univ, Affiliated Hosp 1, Dept Ultrasound, Shenyang, Peoples R China
[3] Katholieke Univ Leuven, Univ Hosp, Dept Radiol, Louvain, Belgium