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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Aug;55(8):1705–1718. doi: 10.1109/TUFFC.2008.856

Fig. 8.

Fig. 8

Grayscale images (50 dB) of the CIRS Model 55 quality assurance phantom using experimentally collected SA pulse-echo data. A chirp transmit pulse was used together with (a) a matched filter and (b) a PIO filter.