Compressive HNPE Diagnosis with CT and MRI
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Questions and Answers

What is the sensitivity of contrast-enhanced CT (CE-CT) for diagnosing compressive HNPE?

  • 100%
  • 80%
  • 95%
  • 91% (correct)
  • What is the main characteristic of compressive HNPE on CE-CT?

  • A diffuse lesions with no enhancement
  • A heterogeneous lesion with central enhancement
  • A hyperattenuating lesion with no enhancement
  • A well-demarcated hypoattenuating lesion with rim enhancement (correct)
  • When is myelo-CT commonly used in diagnosing spinal cord compression?

  • When MRI is available
  • When MRI is not available (correct)
  • When there is a history of spinal trauma
  • When there is a history of spinal infection
  • What is the benefit of using myelo-CT over plain or intravenous CT in acute onset myelopathies?

    <p>It has a higher diagnostic yield</p> Signup and view all the answers

    What is the limitation of this case series in evaluating the benefit of myelo-CT over contrast-enhanced CT?

    <p>It is a retrospective descriptive case series</p> Signup and view all the answers

    What is the conclusion of this case series regarding the use of myelo-CT in diagnosing compressive HNPE?

    <p>Myelo-CT is useful in diagnosing compressive HNPE, especially when combined with clinical information</p> Signup and view all the answers

    Study Notes

    Diagnostic Tools for Compressive HNPE

    • Contrast-enhanced CT (CE-CT) has a sensitivity of 91% and a specificity of 100% for diagnosing compressive HNPE.
    • CE-CT characteristics of compressive HNPE include:
      • Well-demarcated hypoattenuating lesion just above the intervertebral disc space
      • Rim enhancement
      • Variable degrees of spinal cord compression
    • When MRI is not available, myelo-CT is commonly used to:
      • Improve visualization of spinal cord boundaries
      • Better define the myelographic pattern
      • Suspect spinal cord compression
    • Myelo-CT has a higher diagnostic yield compared to plain or intravenous CT in acute onset myelopathies, such as intervertebral disc herniations.
    • Consistent myelo-CT findings of compressive HNPE in dogs include:
      • Presence of compressive HNPE in all but two of 15 cases
      • Utility in distinguishing from other spinal cord pathologies when combined with clinical information

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    Description

    Explore the role of Contrast-enhanced CT and MRI in diagnosing compressive HNPE, including their characteristics and sensitivity. Learn about the diagnostic tools used when MRI is not available.

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