TABLE III.
Summary of parameters for BSC estimation. (λcf: wave length calculated by the center frequency of RF echoes).
| UltraSonix RP | Siemens Acuson S2000 | Zonare Z.one | VisualSonics Vevo2100 | |
|---|---|---|---|---|
| Tapering function | Hann window | Hann window | Rectangular window | Hann window |
| Spectral window size (axial × lateral) | 15 λcf × 15 λcf | 4 mm × 4 mm | L8-3:2.4 mm × 0.8 mm | 15 λcf × 15 λcf |
| (31 adjacent beamlines) | L14-5sp: 2.35 mm × 0.53 mm | |||
| Spectral window overlap (axial × lateral) | 75% × 75% | 75% × 75% | 99% × 99% | 75% × 75% |