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• W4280493865 abstract "Post-stroke cognitive impairment is related to the effects of the acute stroke and pre-stroke brain health. We tested whether diffusion tensor imaging (DTI) can detect acute, global effects of stroke and predict post-stroke cognitive performance. Patients with stroke or TIA enrolled in a prospective cohort study were included if they had 1) at least one DTI acquisition at acute presentation, 24 hours, 5 days, or 30 days, and 2) follow-up testing with the telephone Montreal Cognitive Assessment (T-MoCA) at 30 and/or 90 days. A whole brain, white-matter skeleton excluding the infarct was used to derive mean global DTI measures for mean diffusivity (MD), fractional anisotropy (FA), free water (FW), FW-corrected MD (MD tissue ), and FW-corrected FA (FA tissue ). In 74 patients with ischemic stroke or TIA, there was a transient 4.2% increase in mean global FW between acute presentation and 24 hours (p = 0.024) that returned to initial values by 30 days (p = 0.03). Each acute global DTI measure was associated with 30-day T-MoCA score (n = 61, p = 0.0011–0.0076). Acute global FW, MD, FA and FA tissue were also associated with 90-day T-MoCA (n = 56, p = 0.0034–0.049). Transient global FW elevation likely reflects stroke-related interstitial edema, whereas other global DTI measures are more representative of pre-stroke brain health." @default.
• W4280493865 created "2022-05-22" @default.
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• W4280493865 date "2022-05-17" @default.
• W4280493865 modified "2023-09-23" @default.
• W4280493865 title "Global changes in diffusion tensor imaging during acute ischemic stroke and post-stroke cognitive performance" @default.
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• W4280493865 doi "https://doi.org/10.1177/0271678x221101644" @default.
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