Department of Nuclear Medicine and Minnan PET Center, Xiamen Key Laboratory of Radiopharmaceuticals, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China. Department of Diagnostic Radiology, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore. Department of Surgery, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore. Department of Chemical and Biomolecular Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore. Department of Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore. Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. School of Clinical Medicine, Fujian Medical University, Fuzhou, China.