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. Author manuscript; available in PMC: 2009 Jul 29.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Dec;55(12):2683–2691. doi: 10.1109/TUFFC.2008.983

Fig. 7.

Fig. 7

Lateral beam profiles obtained by the transmit waveforms at the focus from the 20 MHz outer ring of the dual element transducer (Option 1: Dout = 10 mm) and the 20 MHz circular shape single element transducer, measured by a hydrophone and simulated by Field II.