Application of arterial spin labeling perfusion MRI to differentiate benign from malignant intracranial meningiomas

Highlights: • ASL CBF maps are processed in patients with intracranial meningiomas. • Three perfusion patterns can be characterized by visual evaluation of ASL CBF maps and are in correlation with WHO grades of meningiomas. • Qualitative evaluation of ASL CBF maps may prove valuable in differentiating benign from malignant intracranial meningiomas. - Abstract: PurposeDifferentiating WHO grade I–III of meningioma by non-invasive imaging is challenging. This study investigated the potential of MR arterial spin labeling (ASL) to establish tumor grade in meningioma patients.