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Tips and traps in neurological imaging: Imaging the perimedullary spaces.

Diagnostic and interventional imaging | 21 Nov 2012

JL Dietemann, A Bogorin, M Abu Eid, R Sanda, I Mourao Soares, S Draghici, N Rotaru and M Koob
Abstract
The spinal canal is frequently a source of difficulties, traps and diagnostic errors. Pitfalls related to artifacts are resolved by using appropriate sequences. Good knowledge of the appearance of certain particular anatomical structures (the cauda equina roots, the radicular veins of the lumbar spine and conus medullaris, the dorsal root ganglion) and of frequent variants (fibrolipoma of the filum terminale, common root sheaths, root cysts) will avoid a good many errors. Dilatation of epidural veins in intracranial hypotension can simulate the contrast enhancement of a tumour. An increase in epidural fat can induce pathogenic stenosis of the dural sheath.
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Concepts
Lumbar puncture, Dorsal root ganglion, Lumbar vertebrae, Vertebral column, Conus medullaris, Filum terminale, Spinal cord, Cauda equina
MeSH headings
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