Differences in aortic valve area measured with CT planimetry and echocardiography (continuity equation) are related to divergent estimates of left ventricular outflow tract area.

作者: Ethan J. Halpern , Raghuram Mallya , Matthew Sewell , Matisyahu Shulman , Donna R. Zwas

DOI: 10.2214/AJR.08.1986

关键词:

摘要: OBJECTIVE. The purpose of this study was to compare measurements aortic valve area (AVA) obtained with coronary CT angiography (CCTA) and transthoracic echocardiography (TTE) determine whether differences in these estimates are related underestimation the left ventricular outflow tract (LVOT) measured echocardiography.MATERIALS AND METHODS. A retrospective database review yielded cases 41 patients who had undergone CCTA TTE within a 60-day period. AVA direct planimetry on images computed continuity equation at TTE. To ascertain effect LVOT equation, recomputed substitution diameter for dimensions TTE.RESULTS. varied from 0.6 7.0 cm2 included 10 moderate severe stenosis (AVA ≤ 1.5 cm2). greater than that measu...

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