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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