A myelogram uses X-rays (fluoroscopy) and a special dye called contrast material to make pictures of bones and nerves of the spine (spinal canal).
The spinal canal contains the spinal cord and nerve roots surrounded by a fluid-filled space called the subarachnoid space. For a myelogram, the dye (which contains iodine) is put into the subarachnoid space. X-ray pictures are taken as the dye moves into different areas of the subarachnoid space.
A myelogram can be used to find:
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