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Comparison of calculated and known sound-speeds for breast phantom
| Material | Diameter (mm) | Known sound-speed (m/s) | TV calculated sound-speed (m/s) | Tikhonov calculated sound-speed (m/s) |
|---|---|---|---|---|
| Big fat sphere | 12 | 1470 | 1468 | 1472 |
| Small fat sphere | 6 | 1470 | 1480 | 1488 |
| Subcutaneous fat | 1470 | 1468 | 1470 | |
| Glandular | 1515 | 1515 | 1508 | |
| Small tumor | 9 | 1549 | 1544 | 1539 |
| Irregular tumor | 15 | 1559 | 1558 | 1552 |
