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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2016 Dec 21;64(1):78–92. doi: 10.1109/TUFFC.2016.2641299

Fig. 8.

Fig. 8

Frequency domain analysis of data from viscoelastic medium with G0 = 20 kPa, G∞ = 4 kPa, β = 4000 s−1 in LS-DYNA. The transducer simulated was a curved array with focal depth of 50 mm, F/N = 2 and an ARF push length of 167 µs. (a) Spatiotemporal particle velocity, (b) phase gradient data for 200, 400, 600, 800, and 1000 Hz, (c) k-space from 2D FT with white line depicting the phase velocity dispersion associated with the medium specifications, (d) phase velocity dispersion results for phase gradient and k-space analysis compared to the reference.