CT scans are worthless when looking for lesions caused by
MS.
MRI using
MS Protocol
with and without contrast dye, is the only way to get a clear view of lesions. Preferably on a 3T magnification MRI. The entire spine should be looked at, cervical through thoracic. I personally believe that if they are going to examine this much of the spine, that the Lumbar region should be looked at as well, as it sometimes shows things wrong with our spines, such as bulging disks, etc.