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Table 3 Inter-study reproducibility for CMR-FT derived LA dynamics in 2- and 4-chamber views

From: Quantification of atrial dynamics using cardiovascular magnetic resonance: inter-study reproducibility

   Left atrium (2-chamber view) Left atrium (4-chamber view)
   Mean difference ± 2 SD CoV (%) ICC (95 % CI) Mean difference ± 2 SD CoV (%) ICC (95 % CI)
Atrial function Strain (%)       
Reservoir εs 0.7 ± 7.1 9.2 0.96 (0.89-0.99) 0.3 ± 8.2 17.4 0.84 (0.55-0.95)
Conduit εe 0.2 ± 6.3 10.9 0.97 (0.92-0.99) 0.3 ± 7.9 21.7 0.82 (0.48-0.94)
Booster pump εa 0.5 ± 2.2 22.2 0.92 (0.76-0.97) 0.0 ± 3.3 31.4 0.93 (0.80-0.98)
  Strain Rate (s −1 )       
Reservoir SRs 0.0 ± 0.3 9.9 0.96 (0.90-0.99) 0.0 ± 0.4 21.1 0.89 (0.67-0.96)
Conduit SRe 0.0 ± 0.5 16.6 0.93 (0.80-0.98) 0.3 ± 0.9 32.6 0.45 (0.00-0.80)
Booster pump SRa 0.1 ± 0.1 24.4 0.91 (0.73-0.97) 0.0 ± 0.5 37.4 0.76 (0.28-0.92)
  1. Inter-study reproducibility for left atrial strain and strain rate parameters in 2- and 4-chamber views as determined by Bland-Altman analysis (mean difference ± 2SD), coefficients of variation (CoV) and intra-class correlation coefficients (ICC).
  2. SD, standard deviation; CoV, coefficient of variation; ICC, intraclass correlation coefficient; CI, confidence interval.