Myelography is a medical imaging procedure that uses a special dye and X-rays to look at the spinal cord and the surrounding structures. During this test, a contrast dye is injected into the space around the spinal cord, often through a needle inserted into the lower back. This dye makes the spinal cord and nerves show up clearly on X-ray images. The contrast dye used in myelography is generally safe, though it may cause some temporary discomfort or mild reactions in a small number of people. Myelography helps doctors diagnose problems such as herniated discs, spinal tumors, or narrowing of the spinal canal by providing detailed pictures of the spine.

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