Accurate method for measuring arterial pulse wave velocity by cardiovascular magnetic resonance
A modified version of the flow-area (QA) method for measuring pulse wave velocity (PWV) from CMR images is introduced. The new ‘flow-time-area’ (QTA) method is more robust to errors in area measurements than the QA method, which is mathematically proved and demonstrated in pulmonary hypertension study. PWV was correlated to measurements from catheterization, echo, and CMR. The effect of image resolution, inter-, and intra-observer variabilities were studied. The results showed superiority of the QTA method over QA method.