Table 7 Observed and calculated cerebrospinal fluid flow values at C1/C2 and C6/C7
MRI findings | C1/C2 | C6/C7 | ||||
|---|---|---|---|---|---|---|
Cases (n = 10) | Controls (n = 10) | p Valuea | Cases (n = 10) | Controls (n = 10) | p Valuea | |
Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | |||
Mean positive flow (ml/s) | 1.40 ± 0.23 | 1.29 ± 0.81 | 0.44 | 1.16 ± 0.27 | 1.15 ± 0.40 | 0.68 |
Mean negative flow (ml/s) | − 2.56 ± 0.52 | − 2.25 ± 0.76 | 0.35 | − 2.10 ± 0.58 | − 2.02 ± 0.87 | 0.74 |
Peak positive flow (ml/s) | 2.24 ± 0.40 | 1.99 ± 0.42 | 0.25 | 7.84 ± 0.40 | 1.85 ± 0.52 | 1.00 |
Peak negative flow (ml/s) | − 4.23 ± 1.01 | − 4.07 ± 1.04 | 0.44 | − 3.62 ± 1.32 | − 3.75 ± 1.22 | 0.68 |
± Stroke volume (ml) | 26.97 ± 4.07 | 24.25 ± 5.91 | 0.39 | 22.19 ± 5.21 | 21.74 ± 7.70 | 0.74 |
% positive velocity | 64.33 ± 4.17 | 62.67 ± 5.84 | 0.68 | 64.00 ± 5.62 | 63.00 ± 5.08 | 0.68 |
% Negative velocity | 35.67 ± 4.17 | 37.33 ± 5.84 | 0.63 | 36.00 ± 5.62 | 37.00 ± 5.08 | 0.68 |
% Time for max positive flow | 43.00 ± 8.53 | 39.00 ± 5.89 | 0.39 | 42.33 ± 19.75 | 48.67 ± 25.88 | 1.00 |
% Time for max negative flow | 75.67 ± 7.17 | 74.67 ± 7.73 | 0.80 | 73.67 ± 4.29 | 74.33 ± 7.04 | 0.97 |