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Myelography

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Myelography

A myelogram is a diagnostic imaging procedure that uses a contrast dye injected into the spinal canal to create detailed fluoroscopy images (a type of real-time X-ray) of the spinal cord, nerve roots, and meninges.

It is primarily used to detect spinal stenosis, herniated discs, or tumors when an MRI cannot be performed.

It is primarily used to detect:

  • Spinal stenosis: A narrowing of the space inside your spinal canal, the channel that runs through your spine, often caused by bone or tissue pressing inward, which can put pressure on the nerves and spinal cord, causing pain, numbness, or weakness.
  • Herniated discs: A spinal disc in which the soft, jelly-like center (called the nucleus) has pushed through a crack in the tougher outer ring (called the annulus), pressing on nearby nerves and causing pain, numbness, or weakness.
  • Tumors: Abnormal growths that can develop in or around the spine, including the spinal bones, meninges (the protective lining of the spinal cord), or nerve roots, which can press on surrounding structures and cause pain, numbness, or weakness.

    Proper preparation is essential to ensure a smooth procedure. Follow these steps before your appointment:

    • Stop taking blood thinners.
    • Stay hydrated and eat a light breakfast (due to extended positioning during and after the procedure).
    • Arrange for a driver. You and your driver should be prepared to be at our facility for at least 2 hours.

    During your myelography, you’ll lie on an X-ray table while a technician ensures your comfort. Here’s what happens:

    • The Injection: A radiologist uses a needle to inject dye into the subarachnoid space, the area surrounding your spinal fluid, using live X-ray (fluoroscopy) for guidance. A numbing agent is not used, as it would require a second injection point, which increases the risk of infection. You may feel a pinch, a brief burning sensation, and some pressure as the dye is injected. After the injection is completed, you will lie flat on your back for one hour.
    • Imaging: Once the contrast dye has had time to reach the area your physician ordered, you will have a CT scan to get detailed images.

    You will need to rest for 24 hours.

    You will be encouraged to stay hydrated for the remainder of the day, including fluids containing electrolytes (if tolerable)

    While myelography is generally safe, it is important to understand potential side effects and risks:

    Common side effects include:

    • Headache
    • Nausea
    • Soreness at the injection site