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. Author manuscript; available in PMC: 2015 May 19.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Mar;56(3):474–488. doi: 10.1109/TUFFC.2009.1066

Fig. 2.

Fig. 2

Relaxation model for frequency dependent attenuation laws in tissue (left) and water (right). A 2 parameter model is sufficient to closely fit the attenuation laws across a wide frequency range.