| Measures of spinal canal stenosis and relationship to spinal cord structure in patients with cervical spondylosis. | |
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MedLine Citation:
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PMID: 22033418 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVES: Spinal canal stenosis is often measured on anatomical magnetic resonance imaging (MRI) to estimate the degree of spinal cord compression. This study examined whether two quantitative measures of spinal canal stenosis taken from anatomical MRI are related to spinal cord white-matter integrity in patients with cervical spondylosis measured by diffusion tensor imaging (DTI). PATIENTS AND METHODS: DTI and T2-weighted MRI of the cervical spinal cord were performed in 15 patients with cervical spondylosis and ten healthy control subjects of similar age. Severity of stenosis was calculated using Pavlov's ratio and the space-available-for-cord (SAC) technique. RESULTS: Patients had significantly lower Pavlov's ratios and SAC (C2-C3, C4-C5 and C6-C7), lower fractional anisotropy (FA; C2-C3 and C4-C5) and higher radial diffusivity (C2-C3, C4-C5 and C6-C7) than the controls. In patients, only Pavlov's ratio correlated with mean FA (R=0.66, P=0.008). Variations in Pavlov's ratio and FA also showed a similar pattern across cervical levels. CONCLUSION: Pavlov's ratio is a better predictor of spinal cord integrity than the SAC and, therefore, may be more relevant clinically for the evaluation of stenosis in patients with cervical spondylosis. |
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Authors:
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P G Lindberg; A Feydy; K Sanchez; F Rannou; M A Maier |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-25 |
Journal Detail:
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Title: Journal of neuroradiology. Journal de neuroradiologie Volume: - ISSN: 0150-9861 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7705086 Medline TA: J Neuroradiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Masson SAS. All rights reserved. |
Affiliation:
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Centre national de la recherche scientifique (CNRS), unité mixte de recherche (UMR) 8194, centre d'études de la sensorimotricité, 75006 Paris, France; Université Paris-Descartes (Paris-5), Sorbonne Paris Cité, 75006 Paris, France; Service de radiologie B, faculté de médecine, université Paris-Descartes, CHU Cochin, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France. |
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