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Table 5 T2, T1 and T1 IV mapping. Intra and inter observer variabilities showed by Bland-Altman plot and intraclass correlation coefficient

From: Cardiovascular magnetic resonance in heart transplant patients: diagnostic value of quantitative tissue markers: T2 mapping and extracellular volume fraction, for acute rejection diagnosis

   Bias SD of Bias 95% confidence interval Intraclass correlation 95% confidence interval
T2 mapping (msec) Intra observer variability 0.7 1.7 [−2.6; +3.9] 0.983 [−0.957; 0.993]
Inter observer variability 0.3 0.9 [−1.5; + 2.0] 0.949 [− 0.868; 0.980]
T1 mapping before contrast (msec) Intra observer variability −4 21 [−47; + 38] 0.995 [−0.989; 0.998]
Inter observer variability 4 20 [−36; + 44] 0.944 [−0.862; 0.926]
T1 mapping after contrast (msec) Intra observer variability −6 7 [−20; + 9] 0.987 [−0.967 0.995]
Inter observer variability −1 5 [−12; + 9] 0.963 [−0.826; 0.988]
  1. Intra observer and inter observer variabilities were evaluated by the Bland and Altman plot. Results are expressed as Bias, standard deviation of Bias and the 95% confident interval. Intraclass correlation coefficient and his 95% confidence interval were analyzed by two way random test with absolute agreement