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Table 1 Comparison between the 4D-CMR and 2D-PC flows across the pulmonary arteries regarding the stroke volume index, regurgitation fraction, and peak systolic velocity

From: Assessment of flow pattern of right ventricle outflow and pulmonary arteries in surgically corrected tetralogy of Fallot patients by four-dimensional cardiac magnetic resonance flow

  4D-CMR flow 2D-PC flow Significance
paired t test
MPA
 SVI (ml/m2) 44.87 ± 35.71 48.11 ± 41.79 P = 0.179
 RF (%) 24.25 ± 22.27 20.53 ± 18.98 P = 0.027*
 PSV (cm/s) 158.15 ± 28.78 148.34 ± 24.65 P = 0.003*
RPA
 SVI (ml/m2) 27.84 ± 17.11 30.46 ± 20.10 P = 0.218
 RF (%) 18.75 ± 19.69 14.29 ± 16.57 P = 0.039*
 PSV (cm/s) 160.09 ± 46.33 144.50 ± 46.98 P < 0.001*
LPA
 SVI (ml/m2) 21.13 ± 17.11 22.92 ± 20.26 P = 0.091
 RF (%) 26.36 ± 22.17 21.51 ± 18.95 P = 0.046*
 PSV (cm/s) 154.30 ± 40.62 136.36 ± 39.79 P = 0.002*
  1. P P value for Wilcoxon signed ranks test for comparing between 4D-CMR and 2D-PC flows
  2. *Statistically significant at P ≤ 0.05