Table 1 Geometric parameters of our ultrasound devices
Device | Transaxial length at half maximum pressure | Axial length at half maximum pressure | % of energy within length of beam at half maximum pressure |
|---|---|---|---|
Behavioral | 0.6 mm | 7.5 mm | 44.7% |
Laser-guided | 0.8 mm | 8.45 mm | 70% |