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Plots of twinkle power versus time and absolute static pressure in MPa (dashed grey line, right axis) showing the response of the same COM stone (shown in inset) to hyperbaric pressures with (a) taken 24 hours before (b). Both plots show similar trends; however, the hyperbaric threshold to eliminate twinkling is >2 times higher in (b) compared to (a). These data were collected with the L7-4 transducer.
