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Figure 2 Distensibility Measurements of the Aortic Root

(A and B) Taken in the oblique coronal plane, these images show the slice positioning of the acquisition planes at minimal and maximal aortic flow for distensibility measurements, respectively, thus correcting for through-plane motion of the aortic root during contraction. Note the difference in position of the aortic root in both images, because of cardiac motion. (C and D) The corresponding area measurements in the double oblique transverse orientation.