1. School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R. China
2. Department of Pathology, The Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
3. Department of Ultrasound, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai 200000, P.R. China
4. Department of Imaging, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250102, P.R. China