Skip to main content
. 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. 7.

Fig. 7.

Spatial averaging filters for the three transducers: 1.45 MHz (top), 1.53 MHz (middle), and 3.91 MHz (bottom). Error bars denote plus and minus one standard deviation, obtained from transverse scans obtained horizontally and vertically.