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Related Experiment Videos

CT-guided nerve root block and ablation.

S F Quinn1, F R Murtagh, R Chatfield

  • 1Department of Radiology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33682-0179.

AJR. American Journal of Roentgenology
|December 1, 1988
PubMed
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Computed tomography (CT)-guided nerve blocks effectively identify the pain source from herniated discs or stenosis. CT-guided nerve ablations offer pain relief for malignant conditions, particularly thoracic nerve involvement.

Area of Science:

  • Radiology
  • Pain Management
  • Interventional Procedures

Background:

  • Equivocal findings of herniated discs and foraminal stenosis are common on CT and MRI.
  • Determining the clinical significance of these findings is crucial for patient management.

Purpose of the Study:

  • To evaluate the utility of CT-guided nerve root blocks as diagnostic tools.
  • To assess the efficacy of CT-guided nerve root ablations for pain management in patients with malignant disease.

Main Methods:

  • Performed 52 CT-guided peripheral nerve root blocks to diagnose pain generators.
  • Conducted 27 CT-guided nerve root ablations for pain treatment in cancer patients.

Main Results:

  • Nerve blocks successfully anesthetized the target nerve root in 51 out of 52 cases, aiding in pain source identification.

Related Experiment Videos

  • Nerve ablations provided significant pain relief in 63% (17/27) of patients.
  • Thoracic nerve ablations showed higher success (90%) compared to lumbosacral ablations (43%) due to complex innervation patterns in pelvic neoplasms.

    • Conclusions:

    • CT-guided nerve blocks are valuable for determining the clinical significance of ambiguous disc protrusions and foraminal stenosis.
    • CT-guided nerve root ablations have limited but useful efficacy for managing malignant pain, especially in thoracic dermatomes.