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. 2014 Mar 3;41(3):032902. doi: 10.1118/1.4865781

Table 2.

Ultrasound system and TM phantom specifications.

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