1. Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, P. R. China
2. Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P. R. China
3. Center for Biomedical Imaging, Fudan University, Shanghai 200032, P. R. China
4. Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, P. R. China
5. College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200233, P. R. China