Pulse wave velocity (PWV) is an important measure of cardiovascular health, related to vascular stiffness. Aortic PWV can be evaluated with a variety of MRI methods, however a direct comparison of PWV results quantified from 4D flow, 2D phase contrast (PC), and 1D projection PC MRI has not been performed. Here, PWV derived from 4D, 2D, and 1D-PC MRI acquisitions and associated analysis strategies were compared in the aortic arch. Relative agreement was observed among methods. 2D-PC PWV derived from the flow-area approach had substantial variability, likely due to the limited spatial/temporal resolution, and user-dependence of analysis.
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