Skip to main content
. 2022 Dec 14;19:100. doi: 10.1186/s12987-022-00394-0

Table 1.

Average flow rate (ml/s) over the 60 s-acquisition and cross-sectional area (mm2), for Internal Carotid Artery (ICA), Internal Jugular vein (IJV), and cerebrospinal fluid (CSF)

Region of interest F PN PD F vs PN F vs PD PN vs PD
Average flow rate (ml/s) ICA 7.52 ± 1.75 6.06 ± 1.61 4.73 ± 1.25  < 0.001  < 0.001  < 0.001
IJV − 7.31 ± 2.29 − 5.74 ± 2.45 − 4.52 ± 2  < 0.001  < 0.001  < 0.001
CSF 0 ± 0.11 0.02 ± 0.12 0.04 ± 0.11 0 0 0
Absolute CSF 1.09 ± 0.29 1.12 ± 0.35 1.11 ± 0.39 1 1 1
Cross-sectional area (mm2) ICA 33.23 ± 7.52 33.27 ± 6.15 30.75 ± 5.16 1 0.209 0.038
IJV 38.21 ± 26.45 37.73 ± 27.67 36.01 ± 24.12 1 0.985 1
CSF 178.9 ± 53.45 186.31 ± 48.98 182.82 ± 54.34 0.974 1 1
Systolic peak (caudal peak for the CSF) ICA 10.29 ± 2.44 8.64 ± 2.50 6.73 ± 2.00  < 0.001  < 0.001  < 0.001
IJV − 9.08 ± 3.14 − 7.10 ± 3.41 − 5.44 ± 2.65  < 0.001  < 0.001  < 0.001
CSF − 1.81 ± 0.60 − 1.83 ± 0.60 1.54 ± 0.57 1 0.016 0.002
Diastolic peak (cranial peak for the CSF) ICA 5.11 ± 1.34 3.83 ± 1.19 2.79 ± 0.99  < 0.001  < 0.001 0.001
IJV − 5.90 ± 2.05 − 4.73 ± 1.76 − 3.91 ± 1.72  < 0.001  < 0.001 0.006
CSF 1.44 ± 0.53 1.54 ± 0.53 1.49 ± 0.59 0.360 1 1

Mean values ± standard deviation are reported. The free (F), paced normal (PN), paced and deep (PD) respirations paired comparisons are all significant with p < 0.05