Table 2.
Bland-Altman analysis and ICC of pairwise comparison between study observers for LV volumes, mass, ejection fraction and strain parameters (analysis of entire study population, n = 30).
| Parameter | Mean difference ± SD | Limits of agreement | ICC (95% CI) |
|---|---|---|---|
| CMR Expert vs. CMR Beginner | |||
| LVEDVi (ml/m2) | 1.07 ± 5.86 | −10.42 to 12.56 | 0.99 (0.98 to 1.00) |
| LVESVi (ml/m2) | 0.10 ± 7.14 | −13.89 to 14.09 | 0.99 (0.98 to 1.00) |
| LVMi (g/m2) | −2.24 ± 6.57 | −15.13 to 10.64 | 0.97 (0.93 to 0.99) |
| LVEF (%) | 0.76 ± 5.64 | −10.30 to 11.82 | 0.97 (0.94 to 0.99) |
| GLS (%) | −0.02 ± 0.39 | −0.78 to 0.73 | 1.00 (1.00 to 1.00) |
| GCS (%) | 0.22 ± 0.66 | −1.07 to 1.52 | 0.99 (0.99 to 1.00) |
| CMR Expert vs. Echo Expert | |||
| LVEDVi (ml/m2) | 3.29 ± 5.89 | −8.25 to 14.83 | 0.99 (0.96 to 1.00) |
| LVESVi (ml/m2) | 1.45 ± 5.24 | −8.81 to 11.72 | 0.99 (0.99 to 1.00) |
| LVMi (g/m2) | −2.32 ± 6.04 | −14.16 to 9.51 | 0.98 (0.94 to 0.99) |
| LVEF (%) | 0.07 ± 4.23 | −8.22 to 8.36 | 0.99 (0.97 to 0.99) |
| GLS (%) | −0.13 ± 0.50 | −1.11 to 0.85 | 1.00 (1.00 to 1.00) |
| GCS (%) | 0.19 ± 0.59 | −0.96 to 1.33 | 1.00 (0.99 to 1.00) |
| CMR Expert vs. Non-Cardiac Technician | |||
| LVEDVi (ml/m2) | 3.12 ± 8.87 | −14.27 to 20.51 | 0.98 (0.95 to 0.99) |
| LVESVi (ml/m2) | 1.51 ± 4.79 | −7.88 to 10.90 | 1.00 (0.99 to 1.00) |
| LVMi (g/m2) | 0.75 ± 7.40 | −13.76 to 15.25 | 0.97 (0.93 to 0.98) |
| LVEF (%) | 0.38 ± 5.60 | −10.60 to 11.35 | 0.98 (0.95 to 0.99) |
| GLS (%) | 0.25 ± 0.43 | −0.58 to 1.09 | 1.00 (0.99 to 1.00) |
| GCS (%) | 0.19 ± 0.85 | −1.47 to 1.85 | 0.99 (0.98 to 1.00) |
Results are reported as mean ± standard deviation. ICC = intraclass correlation coefficient; CI = confidence interval; CMR = cardiac magnetic resonance. Other abbreviations as in Table 1.