1. Shanghai Med-X Engineering Research Center; School of Biomedical Engineering; Shanghai Jiao Tong University; Shanghai 200030 P. R. China
2. The Key Laboratory of Resource Chemistry of Ministry of Education; Shanghai Key Laboratory of Rare Earth Functional Materials; and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors; Shanghai Normal University; Shanghai 200234 P. R. China
3. Department of Nuclear Medicine; Rui Jin Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai 200025 P. R. China