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Table 5 Bland-Altman analyses for comparisons of the 4D flow CMR aoPWV methods with Cf-PWV and BH-PWV

From: Comparison of different methods for the estimation of aortic pulse wave velocity from 4D flow cardiovascular magnetic resonance

 Cf-PWVBH-PWV
Mean bias (m/s)LA (m/s)Mean bias (m/s)LA (m/s)
S1TTc−0.9[−9.1;7.3]0.9[−8.3;10.1]
TTw0.5[−7.3;8.3]2.2[−5.6;10]
TTf−1.2[−10.4;8.0]0.5[−9.3;10.3]
S2TTc−2.3[−6.4;1.8]−0.5[−6.8;5.8]
TTw−0.5[−5.4;4.4]1.2[−4.9;7.3]
TTf−1.8[−7.4;3.8]−0.1[−7.5;7.3]
S3 −1.4[−5.3;2.5]0.3[−5.6;6.2]
  1. Bland-Altman mean biases and limits of agreement (LA) for comparisons between 4D flow MRI aoPWV values and carotid-femoral PWV (Cf-PWV) as well as the ascending aorta Bramwell-Hill PWV (BH-PWV). Bias was defined as 4D flow MRI aoPWV – Cf-PWV or BH-PWV. S1, S2 and S3: Strategies 1, 2 and 3, respectively. TTc, TTw and TTf: transit times estimated using cross-correlation, wavelets and Fourier transforms, respectively