Normal Reference Values in Han Adults of Extremity Arterial Structure and Hemodynamics by High-frequency Ultrasound

In recent years, high-frequency ultrasound, due to its higher resolution, can clearly display the superficial vascular structure and blood flow, and can detect vascular lesions early, providing a new non-invasive tool for clinical observation of the structure and blood flow of the extremity artery. The purpose of this multi-center study is to establish the normal value of high frequency ultrasound for the structure and blood flow of the extremity arteries of Chinese Han adults, and to explore the influencing factors, so as to provide a quantitative reference for the early diagnosis, degree evaluation and curative effect observation of the structure and blood flow of the extremities.