Podcast
Questions and Answers
What is the sensitivity of contrast-enhanced CT (CE-CT) for diagnosing compressive HNPE?
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?
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 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?
What is the benefit of using myelo-CT over plain or intravenous CT in acute onset myelopathies?
What is the limitation of this case series in evaluating the benefit of myelo-CT over contrast-enhanced CT?
What is the limitation of this case series in evaluating the benefit of myelo-CT over contrast-enhanced CT?
What is the conclusion of this case series regarding the use of myelo-CT in diagnosing compressive HNPE?
What is the conclusion of this case series regarding the use of myelo-CT in diagnosing compressive HNPE?
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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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