Meningiomas: radiological features
Evidence-based neurology checklist on meningiomas: radiological features: Major features on MRI and CT Extra-axial circumscribed lesions Broad based attachment to the dura mater (dural tail) Usually single: they are multiple in about 9% of cases Hypo- or isointense on T1-weighted MRI Iso- or…
Major features on MRI and CT
- Extra-axial circumscribed lesions
- Broad based attachment to the dura mater (dural tail)
- Usually single: they are multiple in about 9% of cases
- Hypo- or isointense on T1-weighted MRI
- Iso- or hyperintense on T2-weighted MRI
- CSF cleft between tumour and brain: this shows as a T2-weighted crescent
- Brain oedema adjacent to the tumour
- Vessel flow voids and enhancement: within the lesion and peripherally
- Prominent central vascular pedicle with radiating smaller vessels
- Avid contrast enhancement on CT and MRI
- Low apparent diffusion coefficient (ADC)
