Group | Peak 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 ± 2.87 | 0.66 ± 0.81 | 0.010 ± 0.008ǂ | 0.010 ± 0.019 | 0.004 ± 0.004§ | 1.87 ± 0.97 |
2 (age: 13-120 months, n = 79) | 5.99 ± 2.97* | 0.76 ± 0.60 | 0.016 ± 0.011ǂ | 0.012 ± 0.017 | 0.009 ± 0.016§ | 1.95 ± 0.86 |
3 (age: 121-202 months, n = 32) | 4.66 ± 2.20* | 0.80 ± 0.54 | 0.018 ± 0.019ǂ | 0.010 ± 0.012 | 0.009 ± 0.010§ | 2.06 ± 1.16 |