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. Author manuscript; available in PMC: 2011 Mar 15.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Aug;57(8):1734–1737. doi: 10.1109/tuffc.2010.1612

Figure 16.

Figure 16

Walsh spectrum of the programmed aberrator together with the spectra of the aberrators retrieved from the simulated experiments with 64 0.3mm width elements, 32 0.6mm width elements and 16 1.2mm width elements.