What It Is
A Myelogram is an exam that can be performed with either an X-ray or CT-Scan, and a special dye as the contrast material. The purpose of a Myelogram is to take pictures of the bone and fluid-filled space between the bones in your spinal canal. Myelograms are usually performed to take a look at a tumor, an infection, herniated discs, or narrowing of the spine caused by arthritis. The spinal canal contains the spinal cord, spinal nerve roots, and subarachnoid space. The dye is put into the subarachnoid space with a very thin needle. A CT-Scan typically follows the injection.