Use of magnetic resonance angiography to select candidates with recently symptomatic carotid stenosis for surgery: systematic review.

Abstract:

OBJECTIVE:To determine if sufficient evidence exists to support the use of magnetic resonance angiography as a means of selecting patients with recently symptomatic high grade carotid stenosis for surgery. DESIGN:Systematic review of published research on the diagnostic performance of magnetic resonance angiography, 1990-9. MAIN OUTCOME MEASURES:Performance characteristics of diagnostic test. RESULTS:126 potentially relevant articles were identified, but many articles failed to examine the performance of magnetic resonance angiography as a diagnostic test at the surgical decision thresholds used in major clinical trials on endarterectomy. 26 articles were included in a meta-analysis that showed a maximal joint sensitivity and specificity of 99% (95% confidence interval 98% to 100%) for identifying 70-99% stenosis and 90% (81% to 99%) for identifying 50-99% stenosis. Only four articles evaluated contrast enhanced magnetic resonance angiography. CONCLUSIONS:Magnetic resonance angiography is accurate for selecting patients for carotid endarterectomy at the surgical decision thresholds established in the major endarterectomy trials, but the evidence is not very robust because of the heterogeneity of the studies included. Research is needed to determine the diagnostic performance of the most recent developments in magnetic resonance angiography, including contrast enhanced techniques, as well as to assess the impact of magnetic resonance angiography on surgical decision making and outcomes.

journal_name

BMJ

authors

Westwood ME,Kelly S,Berry E,Bamford JM,Gough MJ,Airey CM,Meaney JF,Davies LM,Cullingworth J,Smith MA

doi

10.1136/bmj.324.7331.198

keywords:

subject

Has Abstract

pub_date

2002-01-26 00:00:00

pages

198

issue

7331

eissn

0959-8138

issn

1756-1833

journal_volume

324

pub_type

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