Myelography is a medical procedure that uses X-rays and contrast dye to visualize the spinal cord and its surrounding structures. There are several synonyms for myelography, including spinal myelogram, myelogram, spinal canal radiography, and spinal column radiography. These terms are often used interchangeably, but may have slightly different connotations depending on the context. A myelogram or spinal myelogram generally refers specifically to the use of contrast dye, while spinal canal radiography or spinal column radiography may refer more broadly to X-ray imaging of the spine. Regardless of the terminology used, myelography is an important tool for diagnosing and treating spinal cord injuries and other conditions affecting the spine.