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Measured focal depths and -3 dB beamwidths of 10-mm transducer (Sonitron 1000) and 6- and 20-mm transducers (Sonitron 2000).
| Transducer Aperture (mm) | Focal Depth (cm) | Transverse Beamwidth (cm) | Axial Beamwidth (cm) |
|---|---|---|---|
| 10 | 1.0 | 0.3 | 0.1 |
| 6 | 0.2 | 0.1 | 0.4 |
| 20 | 0.2 | 2.4 | 0.8 |
