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Table 5 Summary of quantitative flow analysis

From: 4D cardiovascular magnetic resonance velocity mapping of alterations of right heart flow patterns and main pulmonary artery hemodynamics in tetralogy of Fallot

Parameter rTOF Volunteers P-value
  MPA MPA  
Net flow (mL/cycle) 40.8 ± 37.2 47.3 ± 26.2 0.514
Retrograde flow (%) 29.6 ± 21.4 7.4 ± 5.6 0.001
Peak flow (mL/s) 204.7 ± 126.5 395.8 ± 120.0 0.014
Time-to-peak flow (ms) 254.9 ± 121.1 104.2 ± 29.9 0.001
Peak acceleration (L/s 2 ) 2.83 ± 2.25 6.77 ± 1.23 0.003
Resistance index 0.569 ± 0.275 1.053 ± 0.052 <0.001
Wall shear stress (N/m 2 ) 0.668 ± 0.398 0.235 ± 0.028 0.004
  1. Data are mean ± standard deviation.
  2. rTOF = repaired Tetralogy of Fallot; MPA = main pulmonary artery