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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):1325ā€“1343. doi: 10.1016/j.ultrasmedbio.2009.01.013

Fig. 2.

Fig. 2

Two RF filtering algorithms for motion estimation are illustrated with simulated echo data and resulting displacement profiles for each method. The left branch illustrates the application of bandpass filtering on an ensemble of RF data to estimate displacements. The right branch illustrates the steps taken when complex PCF is applied to the same ensemble of RF data to estimate displacements. RF data were simulated at an SNR of 5 dB, and displacement profiles were estimated by the spline TDE technique and the N to Nāˆ’1 delay profile estimation method.