1. Department of Radiology, Shanghai First People’s Hospital, Shanghai Jiaotong University, Shanghai 200080, China
2. Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
3. Ocean NanoTech, 2143 Worth Lane, Springdale, Arkansas 72764, United States
4. Intramural Research Program, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States