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. Author manuscript; available in PMC: 2010 Apr 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Oct;56(10):2157. doi: 10.1109/TUFFC.2009.1298

Fig. 4.

Fig. 4

Moving-target sub-apertures: on each transmit line, the system enables and receives echoes from a different sub-aperture composed of 16 element clusters. It takes 16 transmit pulses to receive echoes from the entire array.