Skip to main content

Table 3 Inter- technique agreement of 2D and 3D global and regional strain values

From: Comprehensive evaluation of left ventricular deformation using speckle tracking echocardiography in normal children: comparison of three-dimensional and two-dimensional approaches

Variables Bland Altman % error ICC Correlation
Bias LOA Mean Mean 95% CI R
GLS −0.3 3.6 to − 3.7 1.4 0.82 0.61–0.87 0.73*
Basal ante septum −6.5 8.7 to − 21.7 30.3 0.43 −0.23 - 0.71 0.32
Basal anterior −4.5 10.1 to −19 25.4 0.41 −0.26 - 0.62 0.21
Basal lateral −2.8 8 to − 13.6 14.4 0.49 0.40–0.47 0.51
Basal posterior −3.1 9.9 to −15.9 13.4 0.48 0.25–0.53 0.34
Basal inferior 3.7 19.7to −12.3 17.2 0.42 0.27–0.61 0.32
Basal septum −5.7 5.4 to −17.4 34.2 0.49 0.23–0.54 0.29
Mid ante septum −0.2 13.3 to −12.7 1.3.5 0.74 0.47–0.81 0.51*
Mid anterior −2.3 9 to −13.5 12.3 0.42 −0.32 - 0.61 0.22
Mid lateral −1.7 12.2to − 15.7 8.2 0.42 −0.28 - 0.56 0.24
Mid posterior 0.6 13.6 to-12.1 3.1 0.53 0.37–0.65 0.41*
Mid inferior −1.4 13.5 to-16 1.9 0.37 −0.28 - 0.51 0.30
Mid septum −1.2 11.5 to-13.9 2.2 0.51 0.39–0.70 0.40
Apical anterior 0.9 11.9 to-10 4.1 0.50 0.34–0.71 0.32
Apical lateral −1.5 9 to − 12 6.3 0.48 0.36–0.65 0.29
Apical inferior −1.2 13.6 to −15.6 5.1 0.49 0.30–0.66 0.43*
Apical septum −1.1 11.1 to −13.1 6.4 0.63 0.42–0.83 0.41*
  1. GLS global longitudinal strain, ante anterior, STE speckle tracking echocardiography, LOA limit of agreement (95% confidence interval, ICC intra-class coefficient, CI confidence interval, R Pearson’s correlation coefficient. % error = 100 X (difference/ mean). * P < 0.05