Myelogram

CT Myelogram

How It Is Done

A myelogram is done in an outpatient radiology center or in the radiology department of a hospital by a radiologist and assistants.

You will need to take off jewelry that might be in the way of the X-ray picture. You may need to take off all or most of your clothes above the waist (you may be allowed to keep on your underwear if it does not get in the way of the test). You will be given a gown to wear during the test.

A lumbar puncture is done to put the dye into the spinal canal. You will lie on your stomach or side on an X-ray table. The doctor cleans an area on your lower back. A numbing medicine (local anesthetic) is put into your skin.

After the area is numb, a thin needle is put into the spinal canal and a continuous stream of X-rays (fluoroscopy) is used to help the doctor place the needle in the right area. A sample of spinal canal fluid (cerebrospinal fluid) may be taken before the dye is put in the canal.

After the dye is put in, you will lie still while the X-ray pictures are taken. If pictures of your upper back or neck are needed, the table may be tilted or you may be asked to move into different positions so the dye will move into that area. Your chin will be placed on a small pillow to keep your head up. This stops the dye from going into your head, which can cause headaches or seizures. Your pulse, breathing rate, and blood pressure may be checked during the test.

After the X-ray pictures are taken, a small bandage is put on your back where the needle was put in. You will be given instructions on what to do after the test.

After the test

A myelogram usually takes 30 minutes to one hour. If a CT scan is also done, that takes more time.

You may need to lay in bed with your head elevated for 8 hours after the test. To prevent seizures, do not bend over or lie down with your head lower than your body.

Drink plenty of water after the myelogram. Your doctor will give you instructions on taking your regular medicines.

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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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