Table 2.
Parameters | Value |
---|---|
Transmit focus | 30 mm |
Sampling rate | 40 MHz |
Beamformer | 1540 m/s |
Center frequency | 4, 6, 9 MHz |
Bandwidth | 80% |
Phantom sound speed | 1500, 1533, 1580 m/s |
Attenuation coefficient | 0.58, 0.62, 0.72 dB/cm/MHz |
Scatterer diameter | 5–40, 75–90, 125–150 μm |
Scatterer number density | 264, 11, 2 beads/mm3 |