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Abstract

MR imaging of spinal cord and vertebral body infarction.

W T Yuh, E E Marsh, A K Wang, J W Russell, F Chiang, T M Koci and T J Ryals
American Journal of Neuroradiology January 1992, 13 (1) 145-154;
W T Yuh
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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E E Marsh 3rd
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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A K Wang
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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J W Russell
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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F Chiang
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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T M Koci
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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T J Ryals
Department of Radiology, University of Iowa College of Medicine, Iowa City 52242.
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Abstract

PURPOSE To study the usefulness of MR in the evaluation of spinal cord infarctions and associated findings.

MATERIALS AND METHODS MR examinations of 12 patients (10 men and two women) were reviewed retrospectively. Onset of symptoms of spinal cord ischemia was abrupt in all patients; MR was performed 8 hr to 4 months after onset. Contrast-enhanced MR was performed in four of the patients.

RESULTS Abnormal MR findings of the spinal cord included abnormal cord signal (11 of 12), best demonstrated on T2-weighted images, and morphologic changes (cord enlargement during the acute phase in nine patients and cord atrophy during the chronic phase in two), best demonstrated on T1-weighted images. Vascular abnormalities (aortic) were detected by MR in four of the 12 patients. Three of these four patients also had abnormal bone marrow signal, predominantly in the anterior half (one) or in multiple areas near the endplate and/or deep medullary portion of the vertebral body involving several vertebrae (two). T1-weighted images were not sensitive in detecting signal changes in either the bone marrow (two of three) or spinal cord (nine of 12). Enhanced MR imaging was performed in four patients (two in the acute phase and two in the chronic phase) and showed diffuse enhancement of the spinal cord proximal to a relatively unenhancing distal conus in one of the two patients imaged during the acute phase. No abnormal enhancement was noted in the other three patients.

CONCLUSION MR is a useful means of detecting spinal cord infarction and associated vascular and bony changes. The patterns of bone marrow abnormalities reflect the underlying pathophysiology of the blood supply to the spinal cord and bone. The associated vascular and bone marrow abnormalities serve as additional information for the diagnosis of spinal cord infarction.

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American Journal of Neuroradiology
Vol. 13, Issue 1
1 Jan 1992
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MR imaging of spinal cord and vertebral body infarction.
W T Yuh, E E Marsh, A K Wang, J W Russell, F Chiang, T M Koci, T J Ryals
American Journal of Neuroradiology Jan 1992, 13 (1) 145-154;

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MR imaging of spinal cord and vertebral body infarction.
W T Yuh, E E Marsh, A K Wang, J W Russell, F Chiang, T M Koci, T J Ryals
American Journal of Neuroradiology Jan 1992, 13 (1) 145-154;
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