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Table 3 Intraclass correlation coefficients (ICCs) for point-by-point comparison, using each normalisation technique

From: The reproducibility of late gadolinium enhancement cardiovascular magnetic resonance imaging of post-ablation atrial scar: a cross-over study

 

Intra-scan

(C2,3 and C5,6)

Inter-scan

(C2,3,5,6)

Inter-scan

(‘Repro’ only)

Consistency

Absolute Agreement

Consistency

Absolute Agreement

Consistency

Absolute Agreement

Normalisation Method

BP Z-score

0.796 (IQR 0.729–0.848)

0.750 (IQR 0.667–0.827)

0.713 (IQR 0.659–0.764)

0.670 (IQR 0.589–0.720)

0.790 (IQR 0.767–0.799)

0.759 (IQR 0.739–0.768)

V-Myo Z-score

0.754 (IQR 0.688–0.815)

0.499 (IQR 0.355–0.702)

0.677 (IQR 0.622–0.742)

0.363 (IQR 0.258–0.458)

0.748 (IQR 0.744–0.788)

0.436 (IQR 0.339–0.549)

BP IIR

0.788 (IQR 0.723–0.837)

0.743 (IQR 0.644–0.805)

0.691 (IQR 0.655–0.722)

0.628 (IQR 0.530–0.677)

0.770 (IQR 0.664–0.799)

0.679 (IQR 0.622–0.744)

Scar IIR

0.801 (IQR 0.752–0.852)

0.772 (IQR 0.647–0.813)

0.721 (IQR 0.682–0.774)

0.618 (IQR 0.491–0.694)

0.809 (IQR 0.773–0.828)

0.691 (IQR 0.576–0.744)

  1. Values are median (with interquartile range (IQR)). IIR image intensity ratio, BP blood pool, V-Myo ventricular myocardium