<prompt> Dye used for myelography isConray 320MyodilDianosilIopanoicacid  <response>: Myelography uses a real-time form of x-ray called fluoroscopy and an injection of contrast material in subarachnoid space to evaluate the spinal cord, nerve roots and meninges. Iofendylate Myodil is a radiocontrast agent, typically used for performing myelography studies.It is paicularly useful for assessing the spine following surgery and for assessing disc abnormalities in patients who cannot undergo MRI. 