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. Author manuscript; available in PMC: 2012 Jun 27.
Published in final edited form as: Ultrason Imaging. 2011 Oct;33(4):251–263. doi: 10.1177/016173461103300404

Table 1.

Sound speed and attenuation measurements of three phantoms

1500m/s Phantom 1540m/s Phantom 1580m/s Phantom
Sound speed 1499m/s 1539m/s 1581m/s
α o 0.433dB/cm 0.491dB/cm 0.524dB/cm
n 1.179 1.114 1.085
Slope of Attenuation
Coefficient vs.
Frequency at 5MHz		 0.559dB/cm-MHz 0.573dB/cm-MHz 0.591dB/cm-MHz