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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2014 Jun;61(6):966–978. doi: 10.1109/TUFFC.2014.2992

Fig. 1.

Fig. 1

In vitro experimental setup. The cranial part of the macaque skull (including frontal bone, parietal bones, and occipital bone) was 3.09-mm thick in average of the beam-path region, and the human skull (including the frontal and the parietal bones) was 4.65-mm thick.