Table 5 Intraclass correlation coefficients (ICC) and mean absolute difference of DTI indices measurement
From: The comparison of diffusion tensor imaging in human hearts between 1.5 T and 3.0 T
DTI indices | Intra-observer ICC | Intra-observer Bias (limits of agreement) | Inter-observer ICC | Inter-observer Bias (limits of agreement) |
|---|---|---|---|---|
Fractional anisotropy | 0.984 (0.957, 0.994) | − 0.0030 (− 0.018, 0.024) | 0.970 (0.922, 0.989) | 0.0023 (− 0.018, 0.023) |
Mean diffusivity | 0.973 (0.929, 0.990) | − 0.000020 (− 0.000061, 0.000021) | 0.980 (0.948, 0.993) | 0.0000007 (− 0.000026, 0.000027) |
Helix angle | 0.888 (0.726, 0.957) | 2.21 (− 5.48, 9.91) | 0.814 (0.569, 0.926) | 1.44 (− 8.00, 10.87) |
E2 angle | 0.969 (0.920, 0.988) | − 2.17 (− 6.52, 2.18) | 0.939 (0.845, 0.977) | − 3.18 (− 8.82, 2.47) |
Helix angle transmural gradient | 0.922 (0.805, 0.970) | 0.021 (− 0.124, 0.166) | 0.887 (0.724, 0.956) | 0.030 (− 0.149, 0.210) |
Transverse angle | 0.934 (0.834, 0.975) | 0.688 (− 2.98, 4.35) | 0.892 (0.735, 0.958) | 1.379 (− 3.57, 6.33) |