Framework for integrated MRI average of the spinal cord white and gray matter: The MNI–Poly–AMU template
نویسندگان
چکیده
منابع مشابه
A Novel MRI Biomarker of Spinal Cord White Matter Injury: T2*-Weighted White Matter to Gray Matter Signal Intensity Ratio.
BACKGROUND AND PURPOSE T2*-weighted imaging provides sharp contrast between spinal cord GM and WM, allowing their segmentation and cross-sectional area measurement. Injured WM demonstrates T2*WI hyperintensity but requires normalization for quantitative use. We introduce T2*WI WM/GM signal-intensity ratio and compare it against cross-sectional area, the DTI metric fractional anisotropy, and mag...
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Artifacts that can distort the appearance of the cervical spinal cord are caused by data truncation during MR image reconstruction. We used a phantom and then correlated anatomic sections with MR images in cadavers and normal volunteers to evaluate the effect of truncation artifacts on the MR appearance of the spinal cord. When truncation artifacts are minimized, the gray matter and major white...
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Introduction Diffusion Tensor Imaging (DTI) provides important information on tissue structure and changes resulting from pathology are widely used, along with anatomic imaging (T2w) to study mouse spinal cord (SC) diseases [1]. Very high fields (B0≥9.4T), allowing significant increase in SNR, are now commonly used for small animal studies. However, at these field strengths, delineation of stru...
متن کاملMapping average axon diameters in porcine spinal cord white matter and rat corpus callosum using d-PFG MRI
Knowledge of microstructural features of nerve fascicles, such as their axon diameter, is crucial for understanding normal function in the central and peripheral nervous systems as well as assessing changes due to pathologies. In this study double-pulsed field gradient (d-PFG) filtered MRI was used to map the average axon diameter (AAD) in porcine spinal cord, which was then compared to AADs me...
متن کاملReevaluation of gray and white matter injury after spinal cord ischemia in rabbits.
BACKGROUND Although gray matter injury has been well characterized, the available data on white matter injury after spinal cord ischemia (SCI) in rabbits are limited. The current study was conducted to investigate the evolution of ischemia induced injury to gray and white matter and to correlate this damage to hind-limb motor function in rabbits subjected to SCI. METHODS Thirty-eight rabbits ...
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ژورنال
عنوان ژورنال: NeuroImage
سال: 2014
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2014.08.057