1. Department of Medical Imaging, Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat‑sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
2. Department of Radiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
3. Department of Computer Science, School of Computer Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510006, P.R. China