REVIEW: MR elastography of brain tumors

•MR elastography allows non-invasive quantification of the shear modulus of tissue.•MRE correlates with intra-operative consistency of meningiomas, pituitary adenomas.•Reported shear modulus values are widely distributed and overlap.•Meningiomas were the stiffest tumor-type relative to normal appearing white matter.•Studies are needed to determine clinical applications of MRE in neuro-oncology.