Liu S, Churchill J, Hua L, et al. - This study was undertaken to evaluate the utility of obtaining left ventricular outflow tract area (LVOTA) using this technique and its effect on the discordance between aortic valve area (AVA) and gradient criteria in aortic stenosis (AS) grading. Researchers prospectively examined a total of 134 individuals (median age, 80 years; interquartile range, 73–87 years; 39% women) with AS, involving 82 (61%) with severe AS and 52 (39%) with mild or moderate AS. Direct planimetry of LVOTA was applied as a reference standard in a subset of patients who underwent cardiac computed tomography. The outcomes this this study reveal that direct planimetry applying biplane imaging avoids the inherent underestimation of LVOTA utilizing the circular assumption. It was considered that LVOTA obtained by biplane planimetry can lead to better concordance between AVA and mean gradient and classification of AS severity.