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The acoustic tissue properties used in this study where c is the speed of sound and a is the material attenuation coefficient [25, 61]
| Tissue type | c [m s −1] | a/f [Np m −1 MHz −1] |
|---|---|---|
| Air | 343 | 0.04 |
| Blood | 1575 | 1.7 |
| Bone | 3183 | 164 |
| Brain | 1565 | 8.6 |
| Eye (lens) | 1647 | 9 |
| Eye (aqueous humor) | 1537 | 6 |
| Eye (vitreous humor) | 1532 | 5 |
| Fat | 1478 | 7 |
| Muscle | 1581 | 11 |
| Skin | 1720 | 19.7 |
| Tendon | 1750 | 43 |
| Water | 1482.3 | 0.025 |
