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Percutaneous lateral cervical cordotomy: target localization with water-soluble contrast medium
1Department of Radiology (Service of Neuroradiology), Memorial Sloan-Kettering Cancer Center, New York, New York.
Journal of Neurosurgery
|September 1, 1993
Summary
Radiographic identification of the cervical cord target using intrathecal contrast material was improved with a modified coaxial needle system. This technique enhanced electrode placement accuracy, leading to successful percutaneous lateral cervical cordotomy in all patients.
Area of Science:
- Neurosurgery
- Radiology
- Pain Management
Background:
- Percutaneous lateral cervical cordotomy is a neurosurgical procedure for intractable pain.
- Accurate electrode placement, guided by visualization of the dentate ligament, is crucial for surgical success.
- Standard contrast injection may not always provide adequate visualization of the dentate ligament.
Purpose of the Study:
- To evaluate the efficacy of a modified coaxial needle system for contrast injection in percutaneous lateral cervical cordotomy.
- To improve radiographic identification of the cervical cord target and dentate ligament visualization.
- To enhance needle-tip positioning and surgical success rates.
Main Methods:
- Water-soluble intrathecal contrast material was used in 13 patients undergoing percutaneous lateral cervical cordotomy.
- Initial contrast injection aimed for radiographic identification of the cord target and dentate ligament.
- A modified coaxial needle system was employed for additional contrast injection in cases with suboptimal or nonvisualization of the ligament.
Main Results:
- Adequate visualization of the dentate ligament was achieved in 7 out of 13 patients with initial contrast injection.
- In 6 patients with inadequate visualization, the modified coaxial needle system provided enhanced outlining of the cervical cord.
- This improved technique resulted in successful needle-tip positioning and successful surgery in all 6 patients requiring the modified approach.
Conclusions:
- The modified coaxial needle system significantly improves contrast visualization of the cervical cord and dentate ligament during percutaneous lateral cervical cordotomy.
- This technique enhances the accuracy of electrode placement, leading to improved surgical outcomes.
- The modified approach is effective in cases where standard contrast injection fails to provide adequate visualization, ensuring successful cordotomy.