Biomedical Engineering Reference
In-Depth Information
mold and vascular mold) through selective dissolution, leaving
silicone structure. Figure 3.12 shows a representative of this model
that partially reproduces the subarachnoid space around vascular
membrane inside a cube-shaped silicone model.
Subarachnoid Space
Membranous
Arterial Model
10mm
Figure 3.12 In vitro cerebral arterial model with a membranous vascular
coniguration reproduced with circumferential subarachnoid
space.
Here, the presented vascular model presents unfavorable
relection at its subarachnoidal surface, making it dificult to
observe the inward state. This relection is eliminated by illing the
subarachnoid space with a liquid having the same relection indices
as the silicone elastomer (nD25): 1.410; water solution (glycerine:
50wt%) and silicone oil serve aptly for such a luid (Fig. 3.13).
a)
b)
Figure 3.13 Elimination of relection on subarachnoid space by illing the
space with a liquid (silicone oil) having the same relection
indices as the model provides. (a) State before illing the space.
(b) State after the space is illed with silicone oil.
 
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