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American Journal of Roentgenology, Vol 150, Issue 2, 397-403
Copyright © 1988 by American Roentgen Ray Society

Articles

Comparison of MR and CT myelography in imaging the cervical and thoracic spine

MG Karnaze, MH Gado, KJ Sartor, and FJ Hodges 3rd

Mallinckrodt Institute of Radiology, St. Louis, MO 63110.

MR imaging and CT myelography were compared in a retrospective study of 38 patients with suspected lesions of the cervical and thoracic spinal canal and cord. Twenty-eight abnormal cases were found, including spondylosis (9), tumors (8), intramedullary cavities (3), arachnoiditis (3), disk-space-centered infection or osteomyelitis (2), nonneoplastic cord swelling (2), and CSF-borne metastasis (1). MR was equal or superior to CT myelography in depicting cases of cord enlargement, cord compression, and cord atrophy, providing better tissue characterization, no shoulder artifact, and no limitation caused by CSF block. CT myelography was superior to MR in depicting cases of spondylosis and arachnoiditis. It showed superior spatial resolution, which was most pronounced when comparing axial images and hence particularly superior in detecting the lateral extent of disk herniation. Use of surface coils and thin imaging sections is essential for accurate and complete MR evaluation of the cervical and thoracic spine.
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Copyright © 1988 by the American Roentgen Ray Society.