1. Department of Ultrasound, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 651 Dongfeng Rd E, Guangzhou, 510060 China.
2. Department of Radiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
3. Department of Radiology, Interdisciplinary Ultrasound Center, University of Munich Grosshadern Campus, Munich, Germany.