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. Cixi Institute of Biomedical Engineering
6. CAS Key Laboratory of Magnetic Materials and Devices
7. & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province
8. Ningbo Institute of Materials Technology and Engineering
9. Chinese Academy of Sciences