CT typically shows a round or smoothly lobulated mass that appears hyperdense to brain parenchyma in 75% of cases and isodense in the rest. Focal, diffuse, rim-like or punctate calcification is seen in 20% of cases. Contrast enhanced CT generally shows intense, uniform enhancement but 10-15% of cases show an atypical pattern.

On T1WI, it is usually hypo-isointense while on T2WI, it is usually iso-hyperintense, and sometimes heterogeneous. It enhances homogeneously and often exhibits a dural tail. Enhanced MR images are particularly adept at detecting small meningiomas that appear isointense on other MR images. The dural tail sign, which describes peritumoral-enhanced dura, is suggestive of, but not specific to, menigniomas. Intraosseous meningiomas usually extend through the cortical tables into the adjacent soft tissues.

The intraosseous meningioma is often radiologically indistinguishable from the plaque variety because by the time of presentation, the dura is already infitrated and as such, the true origins of the tumor cannot be stated with certainty. Normal 0 Nonetheless, prominent hyperostosis and minimal intracranial presence are more suggestive of the intraosseous sort while associated edema is more suggestive of the plaque variety.