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. Author manuscript; available in PMC: 2010 Apr 26.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Feb;55(2):368–383. doi: 10.1109/TUFFC.2008.655

Fig. 12.

Fig. 12

Data and parameter tracking using the EKF with pulsed ARF force: (a) medium thin phantom, and (b) stiff thin phantom.