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. Author manuscript; available in PMC: 2016 Oct 31.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2015 Mar;62(3):475–493. doi: 10.1109/TUFFC.2014.006788

Fig. 21.

Fig. 21

(a) The initial guess of the sound speed map and the images reconstructed by use of the WISE method with a TV penalty with (βTV = 1.0 ×102) after (b) the 10-th, (b) the 50-th and (d) the 300-th iteration, from the experimentally measured phantom data. The grayscale window is [1.49, 1.57] mm/μs.