Biomedical Engineering Reference
In-Depth Information
vascular structure at correct position and eliminates optical
distortion allowing correctly recognizing vascular coniguration.
After curing the silicone into cubic elastomer structure, we
eliminated the inward RP vascular mold by means of lost wax method.
This process was achieved by two independent manners: heating
and dissolving. We evacuated most part of the lumen model outside
the silicon structure by heating whole the structure at 120 ° C, which
is slightly higher than the melting point of the modeling wax and
lower than the heatproof temperature of silicone elastomer (above
150 ° C). Then we completely dissolved the remaining quantity of
lumen model, by injecting acetone inside lumens, which is hollowly
constructed within the silicone structure through the former
evacuation process. With this procedure, we could completely
eliminate the lumen model within a very short period, and it allowed
eliminating quantities in tight corners and dead ends.
Consequently, we inally constructed a cubic-shaped transparent
elastic model of basilar tip artery that hollowly reproduces the
vascular lumen of living patient with 13 μ m modeling resolution
(Fig. 3.9).
Figure 3.9
An in vitro patient-tailored vasculature model of basilar artery
with BT aneurysm reconstructed from computed tomography
angiography.
3.6
Reproduction of Membranous Vessel
Structure
In a previous section, we showed a patient-speciic model of cerebral
artery within a cube structure and its potential for simulating
 
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