Fig. 3

The resulting segmentation of the aorta for one of the subjects after multi-atlas-based segmentation (in blue) and the calculated centerline (in red) on the multi-slice scan (a). The multi-slice scan and the VE scan with the extracted centerline represented in 3D (b). Automatically delineated ascending and descending aorta contours on the magnitude VE scan, the two dots indicate the centerline point that were used as initiation (c). The computed flow curves obtained from the phase VE scan (d), red curve is the velocity-time curve for the ascending aorta (ROI1) and the green curve is the velocity-time curve for the descending aorta (ROI2), ta stands for arrival time, delta stands for transit time, Dist is the length of the aortic arch and PWV is the pulse wave velocity