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Table 3 Inter-observer and intra-observer reproducibility for LV longitudinal, circumferential and radial strain

From: Cardiovascular magnetic resonance feature tracking in small animals – a preliminary study on reproducibility and sample size calculation

  Parameter Mean difference ± SD Limits of agreement ICC (95% CI)
Inter-observer EllLAX (%) −1.65 ± 5.38 −12.2 to 8.90 0.73
(0.56 to 0.83)
EccSAX (%) −2.37 ± 3.71 −9.64 to 4.89 0.79
(0.46 to 0.91)
ErrSAX (%) 0.05 ± 6.94 −13.55 to 13.66 0.68
(0.37 to 0.84)
Intra-observer EllLAX (%) −1.25 ± 4.62 −10.30 to 7.79 0.83
(0.73 to 0.90)
EccSAX (%) 1.11 ± 4.79 −8.27 to 10.50 0.74
(0.49 to 0.87)
ErrSAX (%) −2.27 ± 6.98 −15.95 to 11.42 0.69
(0.41 to 0.84)
  1. Results are reported as mean ± standard deviation. ICC intraclass correlation coefficient, CI confidence interval. Other abbreviations as in Table 2