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Table 3 Landmarks of the cardiac cycle

From: Age dependence of pulmonary artery blood flow measured by 4D flow cardiovascular magnetic resonance: results of a population-based study

  Group 1
(20–39y.)
n = 43
Group 2
(40–59y.)
n = 44
Group 3
(60–80y.)
n = 39
F(2,375) p-value
TTPsys, %(±SD)
 MPA 17.25 ± 3.58 15.31 ± 3.02 15.38 ± 3.20 6.70 0.011*
 LPA 17.32 ± 6.29 14.65 ± 2.46 15.47 ± 2.50 3.97 0.049*
 RPA 18.23 ± 3.52 16.24 ± 2.62 16.56 ± 7.92 2.20 0.140
 AAo 15.06 ± 4.59 14.89 ± 5.48 13.46 ± 2.70 2.62 0.108
TTPret, %(±SD)
 MPA 43.52 ± 7.45 43.16 ± 5.91 43.53 ± 4.63 0.00 0.994
 LPA 45.26 ± 8.30 44.52 ± 8.29 50.97 ± 13.58 6.37 0.013*
 RPA 46.69 ± 10.01 49.02 ± 13.89 49.97 ± 13.65 1.38 0.242
 AAo 41.18 ± 9.614 39.51 ± 6.17 40.6 ± 4.33 1.40 0.709
TTPdia, %(±SD)
 MPA 59.85 ± 9.296 59.37 ± 6.307 60.53 ± 8.112 0.15 0.701
 LPA 61.06 ± 8.991 60.99 ± 7.276 66.76 ± 10.14 8.54 0.004*
 RPA 61.72 ± 10.15 62.63 ± 9.908 63.11 ± 10.83 0.38 0.54
 AAo 55.71 ± 10.03 57.76 ± 7.792 61.96 ± 9.991 9.26 0.003*
  1. Time-to-peak (TTP) values in % of the cardiac cycle for peak antegrade systolic (TTPsys) and diastolic (TTPdia), and early diastolic retrograde flow (TTPret). SD standard deviation. *statistically significant