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High-resolution constructive interference in steady-state imaging in tethered cord syndrome: technical note.
Steffen K Rosahl1, Osama Kassem, Uwe Piepgras
1Department of Neurosurgery, Albert-Ludwigs-University, D-79106 Freiburg, Germany. rosahl@t-online.de
Surgical Neurology
|April 6, 2005
Summary
High-resolution 3D CISS MRI sequences significantly improve visualization of the filum terminale, aiding in the diagnosis and surgical planning for tethered cord syndrome (TCS). This advanced imaging helps differentiate nerve roots from the filum terminale.
Area of Science:
- Neuroradiology
- Medical Imaging
- Spinal Surgery
Background:
- Differentiating nerve roots from the filum terminale on MRI is challenging but critical for surgical selection in tethered cord syndrome (TCS).
- Current imaging techniques can make this distinction difficult, potentially impacting patient management.
Observation:
- A 3D constructive interference in steady-state (CISS) sequence was compared to a standard T2-weighted fast spin echo sequence in patients with TCS.
- Images were reconstructed from the 3D CISS sequence for detailed analysis.
Findings:
- High-resolution 3D CISS sequences effectively suppressed nerve roots of the cauda equina.
- Visualization of the filum terminale was markedly improved, allowing precise localization of adhesions relative to spinal cord elements.
- Surgical confirmation and subsequent patient improvement validated the enhanced imaging findings.
Implications:
- 3D CISS imaging offers superior visualization for tethered cord syndrome diagnosis.
- This technique should be considered in the presurgical routine for TCS patients.
- Improved diagnostic accuracy can lead to better patient selection and surgical outcomes.