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05.11.2023 | Review Article

Evaluating tissue injury in cervical spondylotic myelopathy with spinal cord MRI: a systematic review

verfasst von: Ali Fahim Khan, Esmaeil Mohammadi, Grace Haynes, Sanaa Hameed, Michael Rohan, David B. Anderson, Kenneth A. Weber II, Fauziyya Muhammad, Zachary A. Smith

Erschienen in: European Spine Journal | Ausgabe 1/2024

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Abstract

Purpose

Cervical Spondylotic Myelopathy (CSM) is a degenerative condition that leads to loss of cervical spinal cord (CSC) integrity. Various spinal cord Magnetic Resonance Imaging (MRI) methods can identify and characterize the extent of this damage. This systematic review aimed to evaluate the diagnostic, biomarker, and predictive utilities of different spinal cord MRI methods in clinical research studies of CSM. The aim was to provide a comprehensive understanding of the progress in this direction for future studies and effective diagnosis and management of CSM.

Methods

A comprehensive literature search was conducted on PubMed and EMBASE from 2010 to 2022 according to PRISMA guidelines. Studies with non-human subjects, less than 3T magnetic field strength, non-clinical design, or not quantitatively focusing on the structural integrity of CSC were excluded. The extracted data from each study included demographics, disease severity, MRI machine characteristics, quantitative metrics, and key findings in terms of diagnostic, biomarker, and predictive utilities of each MRI method. The risk of bias was performed using the guide from AHRQ. The quality of evidence was assessed separately for each type of utility for different MRI methods using GRADE.

Results

Forty-seven studies met the inclusion criteria, utilizing diffusion-weighted imaging (DTI) (n = 39), magnetization transfer (MT) (n = 6), MR spectroscopy (n = 3), and myelin water imaging (n = 1), as well as a combination of MRI methods (n = 12). The metric fractional anisotropy (FA) showed the highest potential in all facets of utilities, followed by mean diffusivity. Other promising metrics included MT ratio and intracellular volume fraction, especially in multimodal studies. However, the level of evidence for these promising metrics was low due to a small number of studies. Some studies, mainly DTI, also reported the usefulness of spinal cord MRI in mild CSM.

Conclusions

Spinal cord MRI methods can potentially facilitate the diagnosis and management of CSM by quantitatively interrogating the structural integrity of CSC. DTI is the most promising MRI method, and other techniques have also shown promise, especially in multimodal configurations. However, this field is in its early stages, and more studies are needed to establish the usefulness of spinal cord MRI in CSM.

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Titel: Evaluating tissue injury in cervical spondylotic myelopathy with spinal cord MRI: a systematic review
verfasst von: Ali Fahim Khan
Esmaeil Mohammadi
Grace Haynes
Sanaa Hameed
Michael Rohan
David B. Anderson
Kenneth A. Weber II
Fauziyya Muhammad
Zachary A. Smith
Publikationsdatum: 05.11.2023
Verlag: Springer Berlin Heidelberg
Erschienen in: European Spine Journal / Ausgabe 1/2024
Print ISSN: 0940-6719
Elektronische ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-023-07990-0

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Evaluating tissue injury in cervical spondylotic myelopathy with spinal cord MRI: a systematic review