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Table 3 Correlation coefficient between calculated diameter and the prosthetic size

From: Mitral prosthetic size predictor in minimally invasive mitral valve replacement

Calculated mitral annulus diameters

All patients

Mechanical valve

Tissue valve

Mean TTE diameter (PLAX diameter and A4C diameter)

0.702

0.683

0.744

Lowest plane on CT scan (passed through the trigones)

 Mean diameter

0.679

0.629

0.756

 Perimeter-derived diameter

0.650

0.628

0.683

 Area-derived diameter

0.663

0.639

0.695

Highest plane on CT Scan (passed through midpoints of the anterior and posterior annuli)

 Mean diameter

0.587

0.522

0.682

 Perimeter-derived diameter

0.622

0.575

0.704

 Area-derived diameter

0.665

0.622

0.730