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Radiology, Vol 182, 761-768, Copyright © 1992 by Radiological Society of North America

ARTICLES

Carotid artery stenosis: clinical efficacy of two-dimensional time-of- flight MR angiography

JE Heiserman, BP Drayer, EK Fram, PJ Keller, CR Bird, JA Hodak and RA Flom
Barrow Neurological Institute, St Joseph's Hospital and Medical Center, Phoenix, AZ 85013.

To assess the clinical efficacy of two-dimensional time-of-flight magnetic resonance (MR) angiography in the evaluation of carotid artery stenosis, a group of patients was evaluated in which 73 vessels were studied with both MR and conventional angiography. Four experienced neuroradiologists each scored both the MR and conventional angiograms in a blinded manner by using a standardized scoring scheme. Comparison of the scores revealed a high degree of correlation. In particular, MR angiography served to discriminate reliably between mildly narrowed and severely narrowed or occluded vessels. Furthermore, severe stenoses were accurately discriminated from occlusions in all cases. MR angiography is a robust and accurate modality for the characterization of carotid artery stenosis. It is useful in conjunction with routine MR imaging of the brain in the evaluation of the patient with suspected carotid arterial disease.


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