Importance of metrizamide CT for evaluation of the thoracic spine.

Post-metrizamide myelographic CT of the area of interest is indicated in cases in which myelography is normal, and also in cases in which myelographic findings alone cannot explain the patient's symptoms. Obtaining early and 4-6 hour delayed CT is of great importance for the detection of syringomyelia and cystic lesions of the cord. In cases of congenital anomalies, additional information can be obtained by this method. This paper presents our experiences at Loyola University Hospital.