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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

From: Native T1 mapping: inter-study, inter-observer and inter-center reproducibility in hemodialysis patients

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
  1. Mean values with standard deviation expressed as n ± SD
  2. BA Bland-Altman, LV left ventricular, LVEDV left ventricular end-diastolic volume, LVESV left ventricular end-systolic volume, LVEF left ventricular ejection fraction