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. Author manuscript; available in PMC: 2019 Dec 30.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2019 Jun 24;66(9):1453–1464. doi: 10.1109/TUFFC.2019.2924351

Fig. 5.

Fig. 5.

RMS differences (RMSD) between experimental beam radial profiles and Gaussian fits as functions of frequency. Error bars are not shown (to reduce clutter), but the average standard deviations of RMSD values for the three transducers over the ranges of frequency shown were 6% (1.45 MHz), 3% (1.53 MHz), and 1% (3.91 MHz).