Mathematical modelling of the CSF system: effects of microstructures and posture on optic nerve subarachnoid space dynamics

Table 3 Radii and permeabilities used for calculating the ONSAS resistance at baseline

Region	\(\varphi\)	\({\kappa }_{i}\left(\varphi \right)\)(m²)	\({mean \,r}_{ons}\)(mm)	\({mean \, r}_{on}\)(mm)	R (mmHg/(ml/min))
Bulbar (length 8 mm)	0.75	1.8e−12	2.54	1.75	47.4
	0.85	6.5e−12	2.54	1.75	12.9
	0.9	1.6e−11	2.54	1.75	5.3
	0.95	6.0e−11	2.54	1.75	1.4
	Free flow	N/A	2.54	1.75	9e−4
Mid-orbital 1 (length 8 mm)	0.75	2.0e−11	1.93	1.46	9.2
	0.85	7.2e−11	1.93	1.46	3.2
	0.9	1.7e−10	1.93	1.46	1.3
	0.95	6.7e−10	1.93	1.46	0.3
	Free flow	N/A	1.93	1.46	2.5e−3
Mid-orbital 2 (length 10 mm)	0.75	2.0e−11	1.79	1.49	18.9
	0.85	7.2e−11	1.79	1.49	5.2
	0.9	1.7e−10	1.79	1.49	2.1
	0.95	6.7e−10	1.79	1.49	0.6
	Free flow	N/A	1.79	1.49	6.9e−3
Canicular (length 8 mm)	0.75	3.1e−11	1.78	1.53	11.3
	0.85	1.1e−10	1.78	1.53	3.1
	0.9	2.7e−10	1.78	1.53	1.3
	0.95	1.0e−9	1.78	1.53	0.3
	Free flow	N/A	1.78	1.53	1.1e−3

The radii are here presented as averages over the regions and the resistances are the total resistances over each region. Permeabilities were calculated as in Kaskar et al. [9]

ISSN: 2045-8118