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Table 3 Regression coefficients and P value maps between abnormally directed velocity and WSS and observer scoring of helicity and vorticity

From: Fully quantitative mapping of abnormal aortic velocity and wall shear stress direction in patients with bicuspid aortic valves and repaired coarctation using 4D flow cardiovascular magnetic resonance

Score Helicity Vorticity
R P* R P*
Velocity (cm3)
 Observer 1 60° < % < 120° 0.49  < 0.001 0.19 0.194
% > 120° 0.37 0.011 0.47  < 0.001
 Observer 2 60° < % < 120° 0.23 0.110 0.21 0.151
% > 120° 0.04 0.766 0.49  < 0.001
WSS (cm2)
 Observer 1 60° < % < 120° 0.59  < 0.001 0.18 0.287
% > 120° 0.36 0.012 0.55  < 0.001
 Observer 2 60° < % < 120° 0.36 0.013 0.08 0.581
% > 120° 0.11 0.461 0.54  < 0.001
  1. Bold values are statistically significant
  2. *Linear regression with P < 0.0125 considered significant
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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