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. Author manuscript; available in PMC: 2012 Aug 10.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Jun;59(6):1201–1211. doi: 10.1109/TUFFC.2012.2310

Fig. 7.

Fig. 7

(a) Simulated lateral point spread functions for an on-axis point target at 10 mm depth. (b) Lateral line spread functions (LSFs) from experiments, for the on-axis wire target at 13 mm depth. Because Hadamard coding does not affect the image other than lowering the noise floor, the LSFs for SPA-0 and SPA-W are not included in (b) to simplify the figure. The image data were compounded over 1 mm axial depth in both (a) and (b), to include most of the side lobe energy.