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Table 2 Phase contrast MRI parameters in various age groups

From: Is cerebral spinal fluid flow associated with body mass index and head circumference in healthy children? A phase contrast magnetic resonance imaging study

GroupPeak velocity (cm/sn)Mean velocity (cm/sn)Forward flow volume (ml)Reverse flow volume (ml)Net volume (ml)Mean aqueductal area (mm2)
1 (age: 1-12 months, n = 26)4.90 ± 2.870.66 ± 0.810.010 ± 0.008ǂ0.010 ± 0.0190.004 ± 0.004§1.87 ± 0.97
2 (age: 13-120 months, n = 79)5.99 ± 2.97*0.76 ± 0.600.016 ± 0.011ǂ0.012 ± 0.0170.009 ± 0.016§1.95 ± 0.86
3 (age: 121-202 months, n = 32)4.66 ± 2.20*0.80 ± 0.540.018 ± 0.019ǂ0.010 ± 0.0120.009 ± 0.010§2.06 ± 1.16
  1. *Statistically significant; p = 0.027
  2. ǂStatistically significant; p = 0.039
  3. §Statistically significant; p = 0.029