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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. 5.

Fig. 5

Images reconstructed by use of (a) the WISE method after the 199-th iteration (1, 018 runs of the wave equation solver), (b) the sequential waveform inversion algorithm after the 43-rd iteration (57, 088 runs of the wave equation solver), (c) the bent-ray model-based sound speed reconstruction method, and (d) the sequential waveform inversion algorithm after the 1-st iteration (1, 024 runs of the wave equation solver) from the noise-free non-attenuated data. The grayscale window is [1.46,1.58] mm/μs.