What is a Myelogram?

A myelogram is a special x-ray of your spine used to check to see if there is any decrease or blockage in the flow of Cerebral Spinal Fluid (CSF) around your spinal column. It is used to diagnose a bulging disc, tumor, or changes in the bones surrounding the spinal cord. A myelogram/CT combined is the most accurate test for evaluating nerve root compression. It is generally reserved for patients with multiple level pathology, patients with prior spinal surgery, or when mechanical instability is suspected. In most other cases, an MRI is usually diagnostic, and because it is not invasive, it is the preferred test for straight-forward spinal disorders.

Procedure

Before the examination begins, the nurse will explain the procedure and you will be asked to sign a consent form. The risks will be outlined which include bleeding, infection, spinal fluid leak, and possible allergic reaction.

You will be positioned on your stomach on the x-ray table. A local anesthetic will then be administered to your lower back. A lumbar puncture or spinal tap is then performed. You will be repositioned, a special dye or contrast agent is injected, and then the needle is removed. A bandage will be placed over the puncture site and a series of x-rays are taken. Following the myelogram, you will be taken for a CT scan.

Precautions

Please inform the nurse or technologist if you have any allergy to iodine or shellfish. Also, let us know if you think you may be pregnant.

Post Exam

After the test, you will stay at Inland Imaging for several hours. During this time a nurse will monitor you until the radiologist who performed the myelogram determines that you may leave. You will need to have a friend or relative drive you home. You should rest throughout the remainder of the day and avoid strenuous activity.

If you develop a headache following the test, drink plenty of fluids, especially caffeine, and lie flat on a bed. If the headache is accompanied by nausea, vomiting, or fever, please call Inland Imaging.