1. Molecular Imaging Center Guangdong Provincial Key Laboratory of Biomedical Imaging The Fifth Affiliated Hospital Sun Yat‐sen University Zhuhai 519000 P. R. China
2. Department of Orthopaedics and Traumatology Stem Cells and Regenerative Medicine Laboratory Li Ka Shing Institute of Health Sciences The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong SAR 999077 P. R. China
3. Department of Physics The Chinese University of Hong Kong Hong Kong SAR 999077 P. R. China
4. Department of Biomedical Engineering The Chinese University of Hong Kong Hong Kong SAR 999077 P. R. China
5. School of Biomedical Sciences and Engineering Guangzhou International Campus South China University of Technology Guangzhou 511442 P. R. China
6. National Engineering Research Center for Tissue Restoration and Reconstruction South China University of Technology Guangzhou 510006 P. R. China
7. Guangdong Provincial Key Laboratory of Biomedical Engineering South China University of Technology Guangzhou 510006 P.R. China
8. Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education South China University of Technology Guangzhou 510006 P. R. China