Does diffusion tensor data reflect pathological changes in the spinal cord with chronic injury.

Abstract:

:Magnetic resonance diffusion tensor imaging has been shown to quantitatively measure the early pathological changes in chronic cervical spondylotic myelopathy. In this study, a novel spongy polyurethane material was implanted in the rat C3-5 epidural space to establish a rat model of chronic cervical spondylotic myelopathy. Diffusion tensor data were used to predict pathological changes. Results revealed that the fractional anisotropy value gradually decreased at 4, 24, and 72 hours and 1 week after injury in rat spinal cord, showing a time-dependent manner. Average diffusion coefficient increased at 72 hours and 1 week after implantation. Hematoxylin-eosin staining and Luxol-fast-blue staining exhibited that the number of neurons in the anterior horn of the spinal cord gray matter and the nerve fiber density of the white matter gradually reduced with prolonged compression time. Neuronal loss was most significant at 1 week after injury. Results verified that the fractional anisotropy value and average diffusion coefficient reflected the degree of pathological change in the site of compression in rat models at various time points after chronic spinal cord compression injury, which potentially has a reference value in the early diagnosis of chronic cervical spondylotic myelopathy.

journal_name

Neural Regen Res

authors

Lin E,Long H,Li G,Lei W

doi

10.3969/j.issn.1673-5374.2013.36.003

subject

Has Abstract

pub_date

2013-12-25 00:00:00

pages

3382-90

issue

36

eissn

1673-5374

issn

1876-7958

pii

NRR-8-3382

journal_volume

8

pub_type

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