Arachnoid Membranes: Crawling Back into Radiologic Consciousness
S. Lu, A. Brusic, F. Gaillard
Abstract
The arachnoid membranes are projections of connective tissue in the subarachnoid space that connect the arachnoid mater to the pia mater. These are underappreciated and largely unrecognized by most neuroradiologists despite being found to be increasingly important in the pathogenesis, imaging, and treatment of communicating hydrocephalus. This review aims to provide neuroradiologists with an overview of the history, embryology, histology, anatomy, and normal imaging appearance of these membranes, as well as some examples of their clinical importance.
Topics & Concepts
MedicineSubarachnoid spaceAnatomyPia materCrawlingConsciousnessConnective tissuePerivascular spaceDura materRadiologyMeningesThird ventricleMagnetic resonance imagingSurgeryCerebrospinal fluid and hydrocephalusFetal and Pediatric Neurological DisordersSpinal Dysraphism and Malformations