Table 2 Interstudy reproducibility of LV mass, volumes and mid-ventricular native T1 values and Inter-observer and intra-observer variability of mid-ventricular native T1 values
Parameter | Study 1 | Study 2 | CoV | BIAS ± SD Difference | BA Limits of Agreement |
|---|---|---|---|---|---|
Inter-study reproducibility | |||||
 LV Mass (diastolic) (g) | 95.2 ± 22.0 | 95.5 ± 22.7 | 1.0% | -0.3 ± 1.96 | -4.5–3.5 |
 LVEDV (ml) | 139.3 ± 21.0 | 138.5 ± 27.8 | 5.2% | 0.8 ± 15.2 | -28.9–30.5 |
 LVESV (ml) | 64.3 ± 16.3 | 64.2 ± 19.7 | 5.6% | 0.1 ± 7.6 | -14.8–15 |
 LVEF (%) | 54.3 ± 7.2 | 54.4 ± 6.8 | 1.1% | -0.1 ± 1.3 | -2.6–2.4 |
 Mid-ventricular native T1 (ms) | 1267.8 ± 35.4 | 1270.7 ± 30.5 | 0.7% | -2.9 ± 17.5 | -37.2–31.3 |
Inter-observer variability | |||||
 Mid-ventricular native T1 (ms) | 1267.6 ± 35.4 | 1271 ± 34.8 | 0.3% | -3.4 ± 6.2 | -15.6–8.8 |
 Intra-observer variability | |||||
 Mid-ventricular native T1 (ms) | 1267 ± 34.3 | 1266 ± 35.5 | 0.4% | 0.66 ± 11.7 | -22.3–23.7 |