Table 1.
Ultrasonic and simulation parameters used for the modelling of the ultrasonic beam patterns.
| Ultrasound probe parameters | Simulation parameters | ||
|---|---|---|---|
| Frequency | 15.625 MHz | Speed of sound | 1540 m/s |
| Nb piezo elements | 128 | Attenuation | 134.24 Np/m (value for brain white matter at 15.625 MHz © 2010–2022 IT’IS foundation) |
| Dimension piezo elements | Spatial sampling | ||
| X | 108 µm | X | 100 µm |
| Y | 1.5 mm | Y | 10 µm |
| Z | 100 µm | ||
| Inter element distance (kerf) | 2 µm | Sampling frequency | 300 MHz |
| Elevation focus | 8 mm | Input waveform | 2 periods of sinusoid |