Figure 2.

Representative magnetic resonance elastography images demonstrate the heterogeneous distribution of stiffness in the kidney. (A) A representative magnetic resonance elastography magnitude image of a kidney allograft and (B) the corresponding stiffness map for the same kidney, where blue represents softer tissue and red represents stiffer tissue (the color bar is in kilopascals). (C) A histogram of magnetic resonance elastography stiffness value frequency derived from the stiffness map in B, showing stiffness heterogeneity across the entire slice. As can be seen on this histogram, measured stiffness values (per pixel) exhibit a wide range (from 1.9 to 10.7 kPa) for this representative slice.