Abstract
Phase contrast (PC) imaging in the ascending aorta (AA) is widely used to calculate left ventricular stroke volume (SV) with cardiovascular magnetic resonance (CMR). The accuracy of PC may be altered by the presence of turbulent flow. Incorrect measurement could have a significant impact on the calculation of other variables such as mitral regurgitation. Although SV measurement at another site (pulmonary valve or left ventricular outflow tract [LVOT]) is suggested in the presence of aortic stenosis (AS), there are very few data validating the accuracy of aortic PC in that setting.
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