Table 2.
Transducers.
| Transducer | Center Frequency (MHz) | Diameter (mm) | Focal Length (mm) |
|---|---|---|---|
| V391 | 0.5 | 29 | 53 |
| V302 | 1 | 25 | 51 |
| V305 | 2.25 | 19 | 51 |
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