Abstract:
BACKGROUND AND PURPOSE:MRI characterization of carotid plaque has been studied recently as a potential tool to predict stroke caused by carotid atherosclerosis. We performed a systematic review and meta-analysis to summarize the association of MRI-determined intraplaque hemorrhage, lipid-rich necrotic core, and thinning/rupture of the fibrous cap with subsequent ischemic events. METHODS:We performed a comprehensive literature search evaluating the association of carotid plaque composition on MRI with ischemic outcomes. We included cohort studies examining intraplaque hemorrhage, lipid-rich necrotic core, or thinning/rupture of the fibrous cap with mean follow-up of ≥1 month and an outcome measure of ipsilateral stroke or transient ischemic attack. A meta-analysis using a random-effects model with assessment of study heterogeneity and publication bias was performed. RESULTS:Of the 3436 articles screened, 9 studies with a total of 779 subjects met eligibility for systematic review. The hazard ratios for intraplaque hemorrhage, lipid-rich necrotic core, and thinning/rupture of the fibrous cap as predictors of subsequent stroke/transient ischemic attack were 4.59 (95% confidence interval, 2.91-7.24), 3.00 (95% confidence interval, 1.51-5.95), and 5.93 (95% confidence interval, 2.65-13.20), respectively. No statistically significant heterogeneity or publication bias was present in the 3 main meta-analyses performed. CONCLUSIONS:The presence of intraplaque hemorrhage, lipid-rich necrotic core, and thinning/rupture of the fibrous cap on MRI of carotid plaque is associated with increased risk of future stroke or transient ischemic attack in patients with carotid atherosclerotic disease. Dedicated MRI of plaque composition offers stroke risk information beyond measurement of luminal stenosis in carotid atherosclerotic disease.
journal_name
Strokejournal_title
Strokeauthors
Gupta A,Baradaran H,Schweitzer AD,Kamel H,Pandya A,Delgado D,Dunning A,Mushlin AI,Sanelli PCdoi
10.1161/STROKEAHA.113.002551subject
Has Abstractpub_date
2013-11-01 00:00:00pages
3071-7issue
11eissn
0039-2499issn
1524-4628pii
STROKEAHA.113.002551journal_volume
44pub_type
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