(a) Elastic material properties
| Material | Density (kg/m3) | Young's modulus (MPa) | Poisson's ratio (/) |
|---|---|---|---|
| Skull | 1,710 | 5,370 | 0.19 |
| Brain | 1,040 | 0.123 | 0.499989 |
| Blood vessels | 1,040 | 15 | 0.48 |
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