Myelogram

CT Myelogram

Test Overview

A myelogram uses a special dye (contrast material) and X-rays (fluoroscopy) to make pictures of the bones and the fluid-filled space (subarachnoid space) between the bones in your spine (spinal canal). A myelogram may be done to find a tumor, an infection, problems with the spine such as a herniated disc, or narrowing of the spinal canal caused by arthritis.

The spinal canal holds the spinal cord, spinal nerve roots, and the subarachnoid space. A dye is put into the subarachnoid space with a thin needle. The dye moves through the subarachnoid space so the nerve roots and spinal cord can be seen more clearly. Pictures may be taken before and after the dye is used. A myelogram may also be done with a CT scan.

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Author:	Maria G. Essig, MS, ELS	Last Updated: September 11, 2007
Medical Review:	Paul D. Traughber, MD - Radiology Kenneth B. Sutherland, CD, BSc, MD, FRCPC - Diagnostic Radiology
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