Document Detail


Collateral Flow and Brain Changes on Computed Tomography Angiography Predict Infarct Volume on Early Diffusion-weighted Imaging.
MedLine Citation:
PMID:  25440366     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: We investigated whether a computed tomography (CT)-based score could predict a large infarct (≥80 mL) on early diffusion-weighted magnetic resonance imaging (DWI).
METHODS: Acute stroke patients considered for endovascular therapy within 8 hours of the onset of symptoms were included. The Alberta Stroke Program Early Computed Tomography Score (ASPECTS) was determined on noncontrast CT and computed tomography angiography source images (CTA-SI). Limited collateral flow was defined as less than 50% collateral filling on CTA-SI.
RESULTS: Fifty-six patients were analyzed. National Institutes of Health Stroke Scale score was 20 (15-24) in the large infarct group and 16 (11-20) in the small infarct group (P = .049). ASPECTS on noncontrast CT and CTA-SI was 5 (3-8) and 3 (2-6) in the large infarct group and 9 (8-10) and 8 (7-9) in the small infarct group (both P < .001), respectively. Limited collateral flow was frequent in the large infarct group than in the small infarct group (92% vs. 11%, P < .001). Multivariate analysis found that CTA-SI ASPECTS less than or equal to 5 (odds ratio [OR], 40.55; 95% confidence interval [CI], 1.10-1493.44; P = .044) and limited collateral flow (OR, 114.64; 95% CI, 1.93-6812.79; P = .023) were associated with a large infarct. Absence of ASPECTS less than or equal to 5 and limited collateral flow on CTA-SI predicted absence of a large infarct with a sensitivity of .89, specificity of 1.00, positive predictive value of 1.00, and negative predictive value of .71.
CONCLUSIONS: Assessment of ASPECTS and collateral flow on CTA-SI may be able to exclude a patient with large infarct on early DWI.
Authors:
Junya Aoki; Yohei Tateishi; Christopher L Cummings; Esteban Cheng-Ching; Paul Ruggieri; Muhammad Shazam Hussain; Ken Uchino
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-10-16
Journal Detail:
Title:  Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association     Volume:  23     ISSN:  1532-8511     ISO Abbreviation:  J Stroke Cerebrovasc Dis     Publication Date:    2014 November - December
Date Detail:
Created Date:  2014-12-3     Completed Date:  -     Revised Date:  2014-12-3    
Medline Journal Info:
Nlm Unique ID:  9111633     Medline TA:  J Stroke Cerebrovasc Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  2845-2850     Citation Subset:  -    
Copyright Information:
Copyright © 2014 National Stroke Association. Published by Elsevier Inc. All rights reserved.
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