TABLE I.
Acoustic parameters for linear and nonlinear simulations.
| Acoustic parameter | Water | Skin | Skull | Brain |
|---|---|---|---|---|
| Sound speed compressional cp (m/s; Van Dongen and Verweij, 2008; White et al., 2006; Duck, 1990) | 1500 | 1624 | 2820 | 1550 |
| Sound speed shear wave cs (m/s; White et al., 2006) | 0 | 0 | 1500 | 0 |
| Density ρ0 (kg/m3; Van Dongen and Verweij, 2008; White et al., 2006; Duck, 1990) | 1000 | 1109 | 1732 | 1030 |
| Absorption coefficient compressional for 1 MHz αp (dB/cm; Van Dongen and Verweij, 2008; White et al., 2006; Goss et al., 1979) | 0 | 1.84 | 8.83 | 0.21 |
| Absorption coefficient shear wave for 1 MHz αs (dB/cm; White et al., 2006) | 0 | 0 | 19.5 | 0 |
| Nonlinearity coefficient β (Duck, 1990) | 3.5 | — | — | 4.3 |