1. Department of Ultrasound, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College (University), Nan Chong, Sichuan Province, China
2. Department of Ultrasound, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
3. Hebin Intelligent Robots Co., LTD, Hefei, Anhui Province, China