1 Department of Abdominal Ultrasound, The First Affiliated Hospital of Harbin Medical University, 150001, Harbin, People's Republic of China.
2 Department of Magnetic Resonance, The First Affiliated Hospital of Harbin Medical University, 150001, Harbin, People's Republic of China.
3 Department of Pathology, The First Affiliated Hospital of Harbin Medical University, 150001, Harbin, People's Republic of China.
4 Department of Abdominal Ultrasound, The First Affiliated Hospital of Harbin Medical University, 150001, Harbin, People's Republic of China. hydyyyxh@163.com.