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• W1982973387 abstract "Damage to specific white matter tracts within the spinal cord can often result in the particular neurological syndromes that characterize myelopathies such as traumatic spinal cord injury. Noninvasive visualization of these tracts with imaging techniques that are sensitive to microstructural integrity is an important clinical goal. Diffusion tensor imaging (DTI)- and magnetization transfer (MT)-derived quantities have shown promise in assessing tissue health in the central nervous system. In this paper, we demonstrate that DTI of the cervical spinal cord can reliably discriminate sensory (dorsal) and motor (lateral) columns. From data derived from nine healthy volunteers, two raters quantified column-specific parallel (λ||) and perpendicular (λ⟂) diffusivity, fractional anisotropy (FA), mean diffusivity (MD), and MT-weighted signal intensity relative to cerebrospinal fluid (MTCSF) over two time-points separated by more than 1 week. Cross-sectional means and standard deviations of these measures in the lateral and dorsal columns were as follows: λ||: 2.13 ± 0.14 and 2.14 ± 0.11 μm2/ms; λ⟂: 0.67 ± 0.16 and 0.61 ± 0.09 μm2/ms; MD: 1.15 ± 0.15 and 1.12 ± 0.08 μm2/ms; FA: 0.68 ± 0.06 and 0.68 ± 0.05; MTCSF: 0.52 ± 0.05 and 0.50 ± 0.05. We examined the variability and interrater and test-retest reliability for each metric. These column-specific MR measurements are expected to enhance understanding of the intimate structure-function relationship in the cervical spinal cord and may be useful for the assessment of disease progression. Copyright © 2009 John Wiley & Sons, Ltd." @default.
• W1982973387 created "2016-06-24" @default.
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• W1982973387 date "2009-01-01" @default.
• W1982973387 modified "2023-10-09" @default.
• W1982973387 title "Reproducibility of tract-specific magnetization transfer and diffusion tensor imaging in the cervical spinal cord at 3 tesla" @default.
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• W1982973387 doi "https://doi.org/10.1002/nbm.1447" @default.
• W1982973387 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2830283" @default.
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