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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Ultrasound Med Biol. 2019 Jun 21;45(9):2540–2553. doi: 10.1016/j.ultrasmedbio.2019.04.016

Figure 4:

Figure 4:

The RMSE calculated in a frequency range from 100 Hz to the frequency corresponding to (a), (b) 80 % and (c), (d) 90 % of the maximum power spectra amplitude presented in Fig. 3a. The RMSE was computed for (a), (c) 2P-CWT and (b), (d) 2D-FT techniques. Results were calculated for the numerical LISA viscoelastic phantoms without added noise with assumed material properties (top row) μ1 = 4.99 kPa and μ2 = 1 Pa·s (Phantom 1). (middle row) μ1 = 3.34 kPa and μ2 = 1.25 Pa·s (Phantom 2). (bottom row) μ1 = 1.48 kPa and μ2 = 0.75 Pa·s (Phantom 3).