CT Scan / CT Myelogram
A computed tomography (CT) scan of the spine uses x-rays to create cross-sectional pictures. A computer reformats this information to create 3 dimensional images of the spine.
CT scans are useful for
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Birth defects of the spine in children
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Injury in the spine
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Fractures
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Disk herniation
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Lumbar spinal stenosis
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Spondylolisthesis
CT scans produce excellent images of bone but are not as good as MRI at representing soft tissue structions like ligaments, capsules, and discs
A CT myelogram includes the injection of contrast material into the subarachnoid space. The dye moves through the space so the nerve roots and spinal cord can be seen more clearly.
A CT myelogram is used when an MRI is not possible - for instance in patients with a pacemaker or other implanted metal objects. The study produces similar information to an MRI
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