Stiffness heterogeneity of gliomas. Stiffness heterogeneity of gliomas. Noncontrast, axial MRE magnitude images (left column), shear wave images (middle column), and elastograms (right column) for 2 patients with grade III gliomas. Images in the top row are from an oligodendroglioma with an IDH1–R132H mutation with |G*| = 3.3 kPa (a 31-year-old man), while the bottom row is from a diffuse astrocytoma with wild type IDH1 with |G*| = 1.7 kPa (a 44-year-old woman). K.M. Pepin et al. AJNR Am J Neuroradiol 2018;39:31-36 ©2018 by American Society of Neuroradiology