Diagnostik und Differenzialdiagnostik von Erkrankungen der Hirnhäute

Zusammenfassung

Erkrankungen der Hirnhäute gehen mit einem pathologischen Signal auf T2w und nativen T1w Aufnahmen einher und zeigen eine pathologische (durale oder leptomeningeale) Mehranreicherung. In diesem Beitrag werden typische Erkrankungen der Meningen vor allem anhand der MRT dargestellt: Die Veränderungen selbst zeigen sich am besten auf kontrastmittelverstärkten T1w und die extrazerebrale Lage am besten auf hochauflösenden T2w Aufnahmen.

Abstract

Meningeal diseases are associated with abnormal contrast on T2- and plain T1-weichted images as well as abnormal dural or leptomeningeal contrast enhancement. These changes may be focal, linear or combined. Magnetic resonance imaging (MRI) is the method of choice for evaluating the meninges, whereby the extracerebral position can be best assessed using a high-resolution T2-weighted sequence and contrast-enhanced T1-weighted images are best suited for the detection of these pathologies.

This review presents the anatomy of the meninges and meningeal spaces. Typical meningeal diseases in adults and their imaging appearances are presented and differential diagnoses discussed.

Schlüsselwörter

Meningen - Differenzialdiagnostik - MRT

Key words

meningeal diseases - differential diagnosis - MRI

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