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Table 2 CSF hydrodynamic properties measured in supine and upright

From: Upright versus supine MRI: effects of body position on craniocervical CSF flow

Measurements Group Average %Change from Upright Paired t-test (p-value)
Upright Supine
CSF Stroke volume (cm3/cycle) 0.33 ± 0.13 0.52 ± 0.19 57.6 6.73E−06
Total systolic CSF volume displaced (cm3/cycle) 0.38 ± 0.13 0.56 ± 0.21 47.4 6.26E−06
Total diastolic CSF volume displaced (cm3/cycle) − 0.35 ± 0.12 − 0.57 ± 0.19 62.9 2.46E−06
Peak systolic CSF flow (cm3/s) 2.79 ± 0.73 2.98 ± 0.91 6.8 0.10
Peak diastolic CSF flow (cm3/s) − 0.98 ± 0.25 − 1.71 ± 0.48 74.5 1.70E−08
Peak systolic CSF velocity (cm/s) 1.06 ± 0.32 1.16 ± 0.35 9.4 0.16
Peak diastolic CSF velocity (cm/s) − 0.37 ± 0.13 − 0.68 ± 0.24 83.8 1.06E−07
Area of CSF space (cm2) 2.71 ± 0.58 2.64 ± 0.68 − 2.6 0.48
  1. Percentage change was calculated as follows: ((supine-upright)/upright)*100