Differentiation of Benign Angiomatous and Microcystic Meningiomas with Extensive Peritumoral Edema from High Grade Meningiomas with Aid of Diffusion Weighted MRI

Figure 4

Characteristic MRI features. The first two rows are representative cases from group 1 (angiomatous, microcystic meningioma). The 3rd and 4th rows are group 2 meningiomas (anaplastic, atypical), whereas the last row is a meningotheliomatous tumor in group 3. The case number is shown in the bottom left corner of the FLAIR image. The columns are organized as FLAIR, T1WI + contrast, ADC map, and CBV map.