Table 1.
The sound speeds in materials of different density
| Tissue type | Density (kg/m3) | Sound speed (m/s) |
|---|---|---|
| Water | 1,000 | 1,500 |
| Unclassified | 1,025 | 1,535 |
| General | 1,025 | 1,555 |
| Fat | 900 | 1,465 |
| Kidney | 1,050 | 1,575 |
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