Table 1.
Spatial peak pressure amplitudes and equivalent MI values (i.e., the negative pressure amplitude divided by the square root of 2.5 MHz) produced at the position of the mouse abdomen for the power adjustments and phantom attenuation used in this study
| Power | Attenuation phantom
|
Water 0 | ||||
|---|---|---|---|---|---|---|
| −12 | −9 | −6 | −3 | 0 | ||
| Positive | 0.3 | 0.5 | 0.84 | 1.55 | 2.9 | 5.8 |
| Mean | 0.3 | 0.5 | 0.82 | 1.40 | 2.4 | 4.3 |
| Negative | 0.3 | 0.5 | 0.78 | 1.25 | 1.9 | 2.8 |
| Equivalent MI | 0.2 | 0.3 | 0.5 | 0.8 | 1.2 | 1.8 |
| IPA | 2.8 | 7.0 | 19 | 57 | 157 | 488 |
The pulse-average intensities (IPA, W cm−2) calculated from the pressure waveforms also are listed.