Fig. 2

Examples of double-oblique and through-plane velocity-encoded images of the thoracic aorta and of pulse wave velocity (PWV) quantification. Sagittal double oblique acquisition (panel a) serves as the input for planning velocity-encoded acquisitions at the level of the ascending (top blue line in a and red contours in b and c) and descending aorta (green contours in b and c). A more distant cross section at the level of the diaphragm is also acquired (bottom blue line in a, and yellow contours in d and e). PWV = Δx/Δt, where Δx is the distance between the ascending aorta and the proximal descending aorta (Δx1) or the aorta at the level of the diaphragm (Δx2), and Δt is the time difference between the two velocity-time curves as plotted in (f)”