1. School of Automation, Northwestern Polytechnical University, Shenzhen, Guangdong, China
2. Shaanxi Normal University, Xi'An, China
3. Harbin Engineering University, Harbin, China
4. Affiliated Hospital of Zunyi Medical University, Zunyi, China
5. Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, School of Biomedical Engineering, Shenzhen University, Shenzhen, Guangdong, China
6. School of Automation, Northwestern Polytechnical University, Xi'an, China