Computed tomography (CT) is a type of X-ray that is used to examine the soft tissues (muscles, ligaments and bones) of the body.
CT scans the body in "slices". An image is formed from the slices to yield a cross-sectional picture. The CT scan is particularly good for showing the condition of the spinal canal and related structures. The CT scan might be a good choice of imaging techniques when determining the presence of spinal stenosis, and good views of the encroachment on nervous tissue caused by the remodeling/reshaping of bones.1, 2
A CT scan might be given along with a myelogram.
The disadvantage of computed tomography is that is delivers more radiation than other imaging diagnostic methods.
1 Low Back Pain Fact Sheet: National Institute of Neurological Disorders and Stroke (NINDS). National Institute of Neurological Disorders and Stroke (NINDS). Retrieved: June 15, 2006.
2 Low Back Pain. Neurosurgerytoday.org June, 2006. Retireved: June 15, 2006.