CT Myelography (peripheral nerve disorders)

This is when a lumbar puncture (spinal tap) is used to inject contrast dye into the spinal fluid and then a CT scan of the cervical spine is performed. The contrast dye surrounds the small nerve rootlets emerging from the spinal cord so that their integrity can be evaluated.

Although not always 100% accurate, this test is important after brachial plexus injury, both to determine prognosis as well as which type of repair is possible. Because the spinal tap is x-ray guided, it is often painless.

CT Myelography

Coronal view (view from front)
CT myelogram of the cervical
spine. Fluid collections (asterisks)
indicate nerve rootlet avulsion
from the spinal cord. Normal
nerve rootlets are also visualized
(arrowhead)

 

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