Table 1 Doppler values of vertebral arteries in different age group
From: Comparison of normal values of Duplex indices of vertebral arteries in young and elderly adults
|  | 20–40 y | 40–60 y | 60–80 y | >80 y |
|---|---|---|---|---|
Diameter (mm) mean value ± SD | 3.51 ± 0.53 | 3.33 ± 0.55 | 3.39 ± 0.64 | 3.37 ± 0.61 |
RI mean value ± SD | 0.701 ± 0.06 | 0.67 ± 0.05 | 0.70 ± 0.07 | 0.73 ± 0.06 |
PSV (cm/s) mean value ± SD | 41.81 ± 14.68 | 37.61 ± 14.59 | 37.65 ± 12.7 | 38.90 ± 13.1 |
FV (ml/min) mean value ± SD | 130.03 ± 47.09 | 110.52 ± 46.01 | 122.19 ± 51.02 | 112.19 ± 52.71 |