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Figure 1 Analysis of Velocity-Encoded Images
Velocity-encoded image of brachial and femoral artery cross sections in a typical young, healthy subject during systole. To the right of each image is a plot of the velocity datapoints (open circles) versus their distance from the optimal center of the cross section. Each plot also shows the parabola segment that is best fit to the datapoints near the arterial wall. The distance from the center at which the best-fit parabola equals zero is the radius of the cross section. The slope of the best-fit parabola at the radius of the cross section is shear rate. Flow is the sum of the velocity points in the cross section.
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