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. Author manuscript; available in PMC: 2011 May 2.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2009 May;56(5):1006–1017. doi: 10.1109/TUFFC.2009.1132

Fig. 8.

Fig. 8

Mean (n=5) ADV and IC threshold, plotted with standard deviations, for various PRFs. The following conditions were used: degassed water at 37°C and 13 cycles. By comparison, the rate at which a new volume of fluid crossed the −6 dB beam width of the single-element transducer, based on the average flow velocity, was 25 Hz (middle dotted line). Therefore, PRFs less than 25 Hz exposed each fluid volume to only a single acoustic pulse from the single element transducer. The left and right dotted lines display the slowest and fastest rates, respectively, at which a fluid volume passes the single-element US beam width, based on the experimental data.