Abstract
Abstract The ultimate determinant of the clinical significance of valvular aortic stenosis (AS) is the systolic aortic valve orifice area (AVA). AVA can be quantified either at cardiac catheterization 1 or noninvasively using transthoracic Doppler echocardiography and the continuity equation. 2 For technical reasons, the Doppler interrogation is not always successful, however, and a substitute noninvasive method for AVA determination would be welcome. Ultrafast computed tomography has shown some promise in this respect, 3 and the present report describes our initial experience with the use of magnetic resonance imaging (MRI) to directly visualize and quantify the systolic aortic valve orifice.
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