Huipan Liu1,2, Yue Chen3,4. 1. Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, No. 25 TaiPing St., Jiangyang District, Luzhou, 646000, Sichuan, People's Republic of China. 2. Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, People's Republic of China. 3. Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, No. 25 TaiPing St., Jiangyang District, Luzhou, 646000, Sichuan, People's Republic of China. chenyue5523@126.com. 4. Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, People's Republic of China. chenyue5523@126.com.