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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: Ultrasound Med Biol. 2016 Apr 20;42(7):1701–1705. doi: 10.1016/j.ultrasmedbio.2016.02.010

Table 2.

Measured physical properties of the three tissue phantoms in this study. Best-fit parameters for α0 and PL were calculated over 2–25 MHz. The best-fit parameter α0 was also calculated over 2–10MHz assuming a linear power law (PL = 1). The goodness of fit parameter coefficient of determination (r2) is also reported.

Material Density
[g/mL]		 Sound speed
[m/s]		 α0
[dB cm−1 MHz−PL]		 PL
[A.U.]		 r2
Prostate phantom 1.04 ± 0.03 1523 ± 30 0.36 ± 0.01 1.12 ± 0.01 0.999
0.46 ± 0.01 1 0.993
Liver phantom 1.05 ± 0.03 1532 ± 4 0.32 ± 0.01 1.09 ± 0.01 0.999
0.41 ± 0.003 1 0.995
Agar phantom 1.01 ± 0.07 1497 ± 13 0.02 ± 0.07 1.57 ± 0.01 0.999
0.09 ± 0.003 1 0.922