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Table 3 Correlations between ejection fraction (EF) and mean values of morphological and mechanical parameters

From: Material stiffness parameters as potential predictors of presence of left ventricle myocardial infarction: 3D echo-based computational modeling study

EF (%) WT (cm) C-cur (1/cm) L-cur (1/cm) Stress (kPa) Strain Vol (ml) Pmax (mm Hg) ED-YMf ES-YMf ∆YMf Dr (cm) Ht (cm)
Infarct Group
 41.2 0.44 0.46 0.56 451.0 1.02 175.6 121 72.6 77.8 5.2 7.0 7.4
 49.0 0.53 0.60 0.55 227.8 0.88 97.9 96 150.4 171.2 20.8 5.5 7.0
 40.2 0.42 0.47 0.24 380.6 1.05 192.6 105 62.2 70.0 7.8 6.8 9.1
 41.3 0.55 0.42 0.26 471.8 1.08 227.2 120 57.1 64.8 7.8 7.7 9.0
 52.2 0.47 0.48 0.43 383.1 1.07 146.5 110 59.7 124.5 64.8 6.2 8.3
 44.8 ± 5.5 0.48 ± 0.05 0.49 ± 0.07 0.41 ± 0.15 382.9 ± 95.6 1.02 ± 0.08 168.0 ± 48.8 110.4 ± 10.5 80.4 ± 39.6 101.7 ± 45.5 21.3 ± 25.1 6.6 ± 0.80 8.1 ± 0.93
Non-Infarcted Group
 60.2 0.76 0.56 0.25 337.3 1.03 115.7 115 72.6 191.9 119.3 6.9 6.6
 61.8 0.61 0.60 0.26 413.0 1.05 119.6 130 72.6 217.8 145.2 6.6 6.8
 58.2 0.71 0.79 0.35 280.6 1.00 78.8 118 108.9 197.1 88.2 6.1 6.3
 57.5 0.75 0.62 0.25 275.3 0.98 119.8 115 116.7 197.1 80.4 6.5 8.1
 61.9 0.69 0.59 0.23 432.7 1.08 120.6 138 72.6 197.1 124.5 6.7 7.6
 59.9 ± 2.0 0.70 ± 0.06 0.63 ± 0.09 0.27 ± 0.05 347.8 ± 73.0 1.03 ± 0.04 110.9 ± 18.0 123.2 ± 10.3 88.7 ± 22.2 200.2 ± 10.1 111.5 ± 26.8 6.6 ± 0.31 7.08 ± 0.72
 R* 0.813 0.702 −0.389 −0.296 0.025 −0.788 0.465 0.196 0.949 0.962 −0.313 −0.636
 p* 0.004 0.024 0.266 0.406 0.945 0.007 0.176 0.587 <0.001 <0.001 0.378 0.048
  1. WT wall thickness, C-cur circumferential curvature, L-cur longitudinal curvature, Vol left ventricular volume, ED-YM f end-diastole YMf value, ES-YM f end-systole YMf value, \( \varDelta {\text{YM}}_{\text{f}} = ({\text{ES - YM}}_{\text{f}} ) - ({\text{ED - YM}}_{\text{f}} ) \), Pmax maximum LV pressure, Dr diameter = (max Dx-out + max Dy-out)/2, Ht height
  2. * R and p values are for the correlations between EF and the 12 geometric and mechanical parameter values