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Table 1 Bland-Altman statistics and t-test p-values for strains and respiratory gating efficiency for the various respiratory gating strategies (p < 0.05 indicates statistical significance and is denoted with a star).

From: The effect of respiratory gating strategy on left ventricular cardiac strains with DENSE

 

Adults

Children

 

Bias ± 95% Limits

p-value

Bias ± 95% Limits

p-value

Circumferential Strain (%)

    

Retrospective vs. Combined

-0.8 ± 4.4

0.27

1.5 ± 2.1

0.006*

Prospective vs. Combined

-0.7 ± 4.3

0.33

1.2 ± 2.4

0.03*

Radial Strain (%)

    

Retrospective vs. Combined

-1.9 ± 16.9

0.50

-0.3 ± 10.1

0.87

Prospective vs. Combined

2.1 ± 12.9

0.33

-1.7 ± 9.7

0.36

Longitudinal Strain (%)

    

Retrospective vs. Combined

0.1 ± 3.3

0.81

-1.1 ± 4.9

0.25

Prospective vs. Combined

1.9 ± 4.2

0.02*

0.6 ± 3.3

0.37

Respiratory Gating Efficiency (%)

    

Retrospective vs. Combined

22.8 ± 27.6

<0.001*

21.1 ± 16.9

<0.001*

Prospective vs. Combined

21.3 ± 28.4

0.001*

27.1 ± 11.0

<0.001*