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Quantitative assessment results of push beams created by three methods
| Main lobe | Angular beams | |||||
|---|---|---|---|---|---|---|
|
|
||||||
| Peak pressure (a.u.) | FWHM (mm) | DOF (mm) | Peak pressure (a.u.) | FWHM (mm) | DOF (mm) | |
| Steering with sub-apertures | 0.36 | 2.21 | 10.82 | 0.20 | 3.30 | 13.54 |
| Sparse array technique | 0.50 | 0.91 | 6.41 | 0.23 | 1.67 | 9.61 |
| Dual-phase transmit focusing | 0.42 | 0.91 | 6.43 | 0.42 | 1.65 | 9.56 |
