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Diameters of sinuses of valsalva measured on MRI. 2-D SSFP of the aortic root in late diastolic phase is identified from the aortic root stack. Diameters are measured in mid-sinus above the aortic valve (a: noncoronary, b: left and c right). In the same patient corresponding CT images (d: noncoronary, e: left coronary and f: right coronary). Navigator-assisted 3-D SSFP or T2 black blood sequences can also be used for these measurements
