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Table 2 Maximal left atrial volume (mL) using different modalities and comparison of it by echocardiography to that by computed tomography

From: Automated quantification of left atrial size using three-beat averaging real-time three dimensional Echocardiography in patients with atrial fibrillation

Modality Mean ± SD Correlation with maximal LA volume by CT
R2 P value ICC P value
PE-2DE 68.4 ± 28.2 0.48 <0.001 0.64 <0.001
AL-2DE 89.2 ± 33.1 0.47 <0.001 0.67 <0.001
3BA-RT3DE 100.6 ± 31.8 0.50 0.001 0.65 <0.001
CT 131.2 ± 42.2     
  1. AL area-length method, CT computed tomography, ICC intra-class correlation coefficient, LA left atrium, PE prolate-ellipse method, 3BA-RT3DE three-beat averaging real-time three-dimensional echocardiography, SD standard deviation, 2DE two dimensional echocardiography