Figure 5: Simulated data with added noise (a) Elastograms (with smoothing) for added noise with MM-SNR level= 5, 10, 20, 30, 40 and 50 (chosen to approximately match the acquired data); (b) mean |G*|^SM over left and right kidney volumes versus MM-SNR, for 60 Hz, and compared to ground truth value (dashed line); (c) similar to (b) but for 90 Hz. (Eroded masks are applied for display and for mean values.)

Figure 4: Simulated MRE elastograms (generated by direct inversion on the simulated displacements) with no added noise for varying voxel dimensions, with mean ± standard deviation |G*| over kidney volume, without smoothing and with smoothing of the displacements with a 3D box filter, and % difference of mean with ground truth. Eroded masks are applied for display and mean value calculations, to remove edge values which are affected by errors at the simulated kidney boundaries.