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(a) The exact scaled shear modulus; (The contrast between the background and the maximum value in the inclusions is 2 to 12.); (b) The recovered scaled shear modulus obtained from the Direct Inversion Method; (c) The recovered scaled shear modulus obtained from the (acoustic) Log-Elastographic method; (d) The recovered scaled shear modulus obtained from the 2D Log-Elastographic scheme. The units are m2/s2. Note that the colorbar in each of these figures is different.
