Table 1:

Mean and SD values of cranial volumetric measurements

	ICCSF (mL)	VCSF (mL)	EVCSF (mL)	GM (mL)	WM (mL)	ICV (mL)	Nor ICCSF (%)	Nor VCSF (%)	Nor EVCSF (%)
Control (n = 11)	238 ± 25	19 ± 6	220 ± 24	557 ± 31	537 ± 47	1332 ± 81	18 ± 2	1.4 ± 0.5	16 ± 1
IIH (n = 11)	309 ± 56	19 ± 7	290 ± 52	602 ± 57	528 ± 35	1438 ± 124	21 ± 3	1.3 ± 0.4	20 ± 2
P value	0.002	0.950	0.0011	0.038	0.616	0.029	0.0014	0.511	0.0007

Note:—EVCSF indicates extraventricular CSF volume; ICCSF, intracranial CSF volume; Nor, normalized; VCSF, ventricular CSF volume.