Fig. 1

Representative images of PWV measurements at ES and BS using ultrafast ultrasound imaging. The yellow rectangular box represents the area of interest. The two red lines represent the anterior and posterior walls of the auto-tracked common carotid artery. The lumen between the two red lines is the carotid artery. The software can automatically identify and record PWV at BS and ES. The Δ ± values indicated the variance in PWV measurements and should be kept below 20% of the PWV values