Document Detail

Comparison of magnetic resonance angiography, conventional angiography, and duplex scanning.
MedLine Citation:
PMID:  1542893     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND PURPOSE: To determine the accuracy of magnetic resonance angiography in assessing patients with cerebrovascular disease, we performed a study comparing the results of conventional cerebral angiography, duplex scanning, and magnetic resonance angiography. METHODS: From 42 patients, a total of 25 carotid arteries were evaluated by all three techniques. The studies were independently read and sorted into five categories according to the degree of stenosis: 0-15%, normal; 16-49%, mild; 50-79%, moderate; 80-99%, severe; and totally occluded. RESULTS: Magnetic resonance angiography correlated exactly with conventional angiography in 39 arteries (52%); duplex scanning correlated with conventional angiography in 49 cases (65%). Compared with conventional angiography, both magnetic resonance angiography and duplex scanning tended to overread the degree of stenosis. The most critical errors associated with magnetic resonance angiography were three readings of total occlusion in vessels found to be patent on conventional angiograms. CONCLUSIONS: Although magnetic resonance angiography offers great hope of providing high-quality imaging of the carotid artery with no risk and at less cost, data from this study suggest that misreading the degree of stenosis, or misinterpreting a stenosis for an occlusion, could lead to errors in clinical decisions. Guidelines for use of magnetic resonance angiography in a clinical setting are offered.
T S Riles; E M Eidelman; A W Litt; R S Pinto; F Oldford; G W Schwartzenberg
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Stroke; a journal of cerebral circulation     Volume:  23     ISSN:  0039-2499     ISO Abbreviation:  Stroke     Publication Date:  1992 Mar 
Date Detail:
Created Date:  1992-04-08     Completed Date:  1992-04-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0235266     Medline TA:  Stroke     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  341-6     Citation Subset:  IM    
Department of Surgery, New York University Medical Center, N.Y. 10016.
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MeSH Terms
Aged, 80 and over
Carotid Arteries / surgery
Carotid Artery Diseases / diagnosis,  radiography,  surgery
Cerebral Angiography*
Magnetic Resonance Imaging*
Middle Aged
Prospective Studies

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