The Importance of Velocity Acceleration to Flow-Mediated Dilation

Figure 4

Acceleration and Steady Shear Components. The normal brachial arterial signal is triphasic, corresponding to the (1) rapid blood flow during systole, resulting in velocity acceleration, (2) initial reversal of blood flow in diastole, and (3) gradual return of forward flow during late diastole, resulting in steady shear component.