Direct Planimetry of Left Ventricular Outflow Tract Area by Simultaneous Biplane Imaging: Challenging the Need for a Circular Assumption of the Left Ventricular Outflow Tract in the Assessment of Aortic Stenosis.

Shiying Liu, Jessica Churchill,Lanqi Hua,Xin Zeng, Valerie Rhoades,Mayooran Namasivayam,Vinit Baliyan,Brian B Ghoshhajra, Tony Dong,Jacob P Dal-Bianco,Jonathan J Passeri,Robert A Levine,Judy Hung

JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY（2020）

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摘要

•Direct planimetry using biplane TTE provides more accurate assessment of LVOT area.•LVOT area by biplane TTE improves the concordance between AVA and MG in AS grading.•Biplane-derived LVOT area improves the classification of low-gradient ‘severe’ AS.

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关键词

Aortic stenosis,Left ventricular outflow tract,Direct planimetry,Simultaneous biplane imaging,2D transthoracic echocardiography

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