1. Department of Radiology, Xiangya Hospital, Central South University, Changsha 410008, China
2. Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, China
3. Molecular Imaging Research Center of Central South University, Changsha 410008, China
4. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China