1. Department of Ultrasound in Medicine
2. The Second Affiliated Hospital of Zhejiang University School of Medicine
3. Hangzhou 310009
4. P. R. China
5. Laboratory of Molecular Imaging and Nanomedicine (LOMIN)
6. Faculty of Health Sciences
7. University of Macau
8. Macau
9. National Institute of Biomedical Imaging and Bioengineering (NIBIB)
10. National Institutes of Health (NIH)
11. Bethesda
12. USA