Table 2 Reproducibility of feature-tracking analysis.

From: Feature-tracking myocardial strain in healthy adults- a magnetic resonance study at 3.0 tesla

 

Intra-observer variability

Inter-observer variability

Mean Bias ± SD

ICC

p-value

Correlation R

Mean Bias ± SD

ICC

p-value

Correlation R

Global circumferential strain

0.27 ± 0.84

0.98

<0.001

0.95

0.04 ± 1.80

0.92

<0.001

0.79

Segmental circumferential strain

2.66 ± 11.34

0.78

<0.001

0.65

1.94 ± 12.91

0.66

<0.001

0.60

Global longitudinal strain

−0.05 ± 0.43

0.95

<0.001

0.94

0.04 ± 1.43

0.92

<0.001

0.99

Segmental longitudinal strain

−1.45 ± 10.03

0.88

<0.001

0.68

1.63 ± 13.14

0.77

<0.001

0.62

  1. ICC: intra-class correlation co-efficient. ‘A sample size of 10 participants was taken per variable.
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