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. Author manuscript; available in PMC: 2019 Jan 9.
Published in final edited form as: Phys Med Biol. 2018 Jan 9;63(2):025011. doi: 10.1088/1361-6560/aa9a2f

Figure 7.

Figure 7

Plots of twinkle power versus time and absolute static pressure in MPa (dashed grey line, right axis) showing the effect of hyperbaric pressures for the same brushite stone (shown in inset) with the plot in (a) taken 4 days before the plot in (b). Twinkling is found to increase with hyperbaric pressures in (a), whereas twinkling decreases with the increasing pressure in (b). In both cases, twinkle powers are similar at both the beginning and the ends of the plots. These data were collected with the P4-2 transducer.