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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