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Related Experiment Videos

Diffusion-weighted MR imaging with apparent diffusion coefficient and apparent diffusion tensor maps in cervical

Ayhan Demir1, Mario Ries, Crit T W Moonen

  • 1Department of Neuroradiology, CHU-Pellegrin, Place Amélie Raba-Léon, 33076 Bordeaux, France.

Radiology
|October 2, 2003
PubMed
Summary

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Diffusion-weighted MRI enhances detection of cervical spondylotic myelopathy. This technique shows improved sensitivity and negative predictive value compared to standard T2-weighted imaging for diagnosing this condition.

Area of Science:

  • Neuroradiology
  • Medical Imaging
  • Neurology

Background:

  • Cervical spondylosis and myelopathy are common neurological conditions.
  • Accurate imaging is crucial for diagnosis and management.
  • Diffusion-weighted MRI (DW-MRI) offers potential for improved diagnostic capabilities.

Purpose of the Study:

  • To evaluate the effectiveness of diffusion-weighted magnetic resonance (MR) imaging in patients with cervical spondylosis and/or myelopathy.
  • To compare the diagnostic performance of DW-MRI with conventional T2-weighted imaging.

Main Methods:

  • A multishot echo-planar imaging sequence was used to acquire diffusion-weighted images, calculating apparent diffusion coefficient (ADC) and apparent diffusion tensor (ADT).
  • 36 patients with symptomatic cervical spondylosis underwent DW-MRI and T2-weighted imaging.

Related Experiment Videos

  • Image analysis was performed by experienced neuroradiologists, comparing findings with clinical status and electrophysiologic examination in a subgroup.

    • Main Results:

    • DW-MRI (ADC and ADT maps) demonstrated abnormal values in patients with myelopathy, indicating increased diffusion and decreased anisotropy.
    • For detecting myelopathy, DW-MRI showed higher sensitivity (80%) than T2-weighted images (61%).
    • In patients with electrophysiologically confirmed myelopathy, DW-MRI sensitivity increased to 92%, significantly outperforming T2-weighted imaging (53%).

    Conclusions:

    • Diffusion-weighted imaging significantly improves the sensitivity for detecting cervical spondylotic myelopathy.
    • DW-MRI, particularly ADC and ADT analysis, offers a valuable tool for diagnosing myelopathy in cervical spondylosis.
    • The enhanced sensitivity of DW-MRI aids in more accurate patient assessment and management planning.