Evaluation of cerebrospinal fluid flow dynamic changes in patients with idiopathic intracranial hypertension using phase contrast cine MR imaging

Table 2 Parameters of CSF flowmetry between cases and control group

CSF flowmetry	ΙV	Ι	ΙΙ	ΙΙΙ	Test of significance	P value
	N = 10	N = 10	N = 10	N = 10
PSV	3.0 ± 0.85	3.47 ± 1.09	4.40 ± 2.14	3.30 ± 1.2	F = 1.83	P = 0.16 p1 = 0.29 p2 = 0.07 p3 = 0.53
PDV	2.45 ± 0.85	2.86 ± 1.62	3.48 ± 1.1	2.63 ± 0.96	F = 1.47	P = 0.24 p1 = 0.48 p2 = 0.03* p3 = 0.44
SV	23.30 ± 7.57	27.05 ± 13.51	29.65 ± 9.26	24.35 ± 12.9	F = 0.68	P = 0.57 p1 = 0.44 p2 = 0.11 p3 = 0.81
Aqueductal area	0.041 ± 0.01	0.044 ± 0.02	0.042 ± 0.01	0.037 ± 0.01	F = 0.25	P = 0.86 p1 = 0.75 p2 = 0.98 p3 = 0.56
MF	0.11 ± 0.03^B	1.28 ± 0.04	0.16 ± 0.047^AB	0.096 ± 0.06^A	F = 3.10	P = 0.039* p1 = 0.31 p2 = 0.02* p3 = 0.55

All parameters described as mean ± SD. Similar superscripted letters in same row denote significant difference between groups
*Statistically significant. PSV peak systolic velocity (cm/s), PDV peak diastolic velocity (cm/s), SV stroke volume (ml/min), aqueductal area (cm²), MF mean flow (cm³/s), p1 difference between control and first discovered groups, p2 difference between control and on medical treatment groups, p3 difference between control and on frequent lumber tapping groups