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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Ultrasound Med Biol. 2009 Jun 10;35(8):1325–1343. doi: 10.1016/j.ultrasmedbio.2009.01.013

Fig. 4.

Fig. 4

Filtered ensembles of RF are illustrated after either bandpass filtering (left) or complex PCF (right) applied to ensembles of RF simulated with (a) 5-dB SNR (bottom) and (b) 40-dB SNR (bottom). The normalized phase of associated PCs are displayed for (a) the 5-dB SNR instance (top) and (b) the 40-dB SNR instance (top). The PCs are shown with the first, most energetic PC on the top and the third PC on the bottom.