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Table 2 Mean cerebral blood flow and optic nerve sheath diameter

From: The incidence of obesity, venous sinus stenosis and cerebral hyperaemia in children referred for MRI to rule out idiopathic intracranial hypertension at a tertiary referral hospital: a 10 year review

Case Age
years
Arterial inflow
ml/min
Sagittal sinus flow
ml/min
Straight
sinus flow
ml/min
SSS %
flow
ST %
Flow
Brain volume
cm3
CBF
ml/100cm3/min
Average ONSD
mm
Control
 Mean 9.2 990 560 170 57 17 1224 82 5.3
 SD 4.1 210 130 70 8 5 219 15 0.6
 n = 22          
At risk for IIH Hyperemic
 Mean 8.3 1620 670 190 42 12 1358 120 6.2
 SD 3.5 190 150 60 10 3 1136 16 0.9
 n = 19          
 t-test 0.48  < 0.0001* 0.01* 0.26  < 0.0001* 0.001* 0.03*  < 0.0001* 0.0002*
At risk for IIH non Hyperemic
 Mean 10.5 1010 530 140 48 13 1321 84 5.1
 SD 3.4 190 110 60 7 5 152 16 0.7
 n = 23          
 t-test 0.25 0.09 0.41 0.23 0.001* 0.02* 0.12 0.58 0.26
All cohort
 Mean 9.5 1330 600 170 46 13 1334 100 5.6
 SD 3.5 310 150 60 10 4 145 24 1.0
 n = 42          
 t-test 0.73  < 0.0001* 0.34 0.88  < 0.0001* 0.0009* 0.02* 0.005* 0.19
  1. cm3 centimeter cubed, SSS superior sagittal sinus, ST straight sinus, ml/100cm3/min milliliters per 100 cm cubed per minute, mm millimeters, mm2 millimeters squared, SD standard deviation, ONSD optic nerve sheath diameter; *, t-test p value < 0.05. All t-tests compare patient groups with the control group