1. Department of Medical Ultrasonics, Institute of Diagnostic and Interventional Ultrasound of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People’s Republic of China;
2. Department of Hepatobiliary Surgery, Institute of Diagnostic and Interventional Ultrasound of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People’s Republic of China;
3. Department of Radiology of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People’s Republic of China