Two-dimensional transthoracic measure of mitral annulus in mitral valve prolapse and moderate to severe regurgitation: a method comparison analysis with three-dimensional transesophageal echocardiography

Table 3 Comparison between 3D TEE semi-automatic MA area and MA area derived from 2D TTE MA diameters

MA area derived from 2D TTE MA diameters	Mean difference between methods ± SD or median difference (25th–75th percentiles), (mm²)	% of systematic underestimation	Precision (mm²)	Percent error (%)
Method 1, MA area (mm²) (circular model, A4c)	79 ± 289	6	1,132	82
Method 2, MA area, (mm²) (elliptical model, A2c-A4c)	108 (− 51 to + 370)	8	912	66
Method 3, MA area, (mm²) (elliptical model, A2c-PLAX)	350 ± 265	25	1,040	75

A4c apical 4 chamber, A3c apical 3 chamber, A2c apical 2 chamber, MA mitral annulus, PLAX parasternal long-axis, SD standard deviations, 3D TEE 3-dimensional transesophageal echocardiography, 2D TTE 2-dimensional transesophageal echocardiography

ISSN: 2586-7296