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- W2076171337 abstract "Background: Based on previous observations of a high rate of ischemic lesion recurrence on diffusion-weighted imaging (DWI) within 1 week after an acute ischemic stroke, the authors hypothesized that silent new ischemic lesions are common between 1 week and 90 days after index stroke and that early lesion recurrence may be associated with late lesion recurrence. Methods: The authors studied 80 acute ischemic stroke patients who had initial MRI performed within 48 hours, and follow-up scans at 5 days and at 30 or 90 days after onset. Early lesion recurrences were defined as new ischemic lesions on 5-day DWI, and late lesion recurrences were defined as those on 30- or 90-day DWI or fluid attenuation inversion recovery image. Early lesion recurrence occurring outside the initial perfusion deficit was termed distant lesion recurrence. Results: Late lesion recurrence occurred in 26%, more frequently observed on 30-day MRI than 90-day MRI ( p = 0.016). Early lesion recurrence (OR 4.0; 95% CI 1.3 to 11.7) and distant early lesion recurrence (OR 6.9; 95% CI 1.5 to 32.2) were independently associated with late lesion recurrence by multiple logistic regression analyses. Conclusions: There may be a continued risk for recurrent ischemic lesions in the weeks following the clinically symptomatic stroke. Future studies are needed to investigate whether MRI-defined ischemic lesion recurrences predict subsequent clinical recurrence and thus may be a potential surrogate endpoint in stroke secondary prevention trials." @default.
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- W2076171337 date "2004-12-28" @default.
- W2076171337 modified "2023-10-11" @default.
- W2076171337 title "Early and late recurrence of ischemic lesion on MRI" @default.
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- W2076171337 doi "https://doi.org/10.1212/01.wnl.0000147295.50029.67" @default.
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