myelográfia

Myelography is a medical imaging procedure used to visualize the spinal cord and the spaces surrounding it. It involves the injection of a contrast dye, which is a radiopaque substance that shows up clearly on X-rays, into the subarachnoid space, the area around the spinal cord containing cerebrospinal fluid.

Before the procedure, a local anesthetic is typically administered to numb the injection site, usually in the lower back. A needle is then inserted into the spinal canal, and a small amount of cerebrospinal fluid may be withdrawn. Following this, the contrast dye is injected. Once the dye is in place, the patient is moved into various positions on a tilting table, allowing gravity to distribute the dye along the spinal cord. X-ray images are then taken from different angles. In some cases, a CT scan may be performed immediately after the myelogram for more detailed cross-sectional views.

Myelography is primarily used to diagnose conditions that may be compressing or affecting the spinal cord, such as herniated discs, spinal stenosis, tumors, inflammation, or injuries. It can help pinpoint the exact location and extent of these abnormalities.

Potential risks associated with myelography include headache, nausea, vomiting, and dizziness, which are usually temporary. More serious complications, though rare, can include infection, bleeding, or allergic reactions to the contrast dye. After the procedure, patients are often advised to rest and drink plenty of fluids.