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CT Myelogram

Last Updated: 2026-01-01 Author:

  • 1. Clinical Summary

    Series Phase Coverage
    CT Myelogram Non-contrast Region of interest to Extended coverage
    • Post-myelogram CT
    • Intrathecal contrast follow-up
    • Spinal stenosis
    • Nerve root compression

  • 2. Patient Prep

    • Position: Supine. Post-lumbar puncture
    • NPO Status: N/A
    • Pre-Medication:
      • Intrathecal contrast already given

  • 3. IV Contrast & Injection

    Parameter Value
    Agent Omnipaque 240 intrathecal
    Volume 10-15 mL IT
    Flow Rate N/A

    Use full dose if GFR > 30

    If GFR < 30

    Max Contrast = \(2*\left[\frac{\text{Patient Weight}}{75 \text{ kg}} * \text{eGFR}\right]\)

  • 4. Special Notes

    • Post-LP CT. Usually lumbar region. Thin slices. Axial and sagittal reformats. Assess nerve root sleeves and thecal sac
    • Additional Recons: Oblique reformats for nerve roots. Document stenosis level and severity
    • Patient already had LP with IT contrast. Position comfortably

    Safety First

    • Renal Function: N/A
    • Allergy: N/A
    • Nerve root sleeves. Thecal sac compression. Spinal stenosis. Disc herniations. Surgical planning detail
    • Post-LP headache precautions. Thin slices for nerve detail
Series Name Start Location End Location Delay Slice Thickness Notes
Scout Coverage area Based on region N/A N/A AP and lateral
CT Myelogram Region of interest Extended coverage N/A 0.625 mm Submillimeter for detail
Plane Acquisition FOV Thickness/Increment Kernel IR Strength Notes
Axial Myelogram Spine 1 mm/1 mm Bone and Standard 3 Nerve roots and thecal sac
Sagittal Myelogram Spine 1.5 mm/1 mm Standard 3 Thecal sac and compression
Coronal Myelogram Spine 2 mm/1.5 mm Standard 3 Coronal nerve roots
Oblique sagittal Myelogram Neural foramina 1.5 mm Standard 3 Foraminal nerve roots