ArticleAlzheimer's & dementia (Amsterdam, Netherlands)
Fixel-based analysis and free-water metrics in subjective cognitive decline and cognitive impairment no dementia.
Article in Alzheimer's & dementia (Amsterdam, Netherlands). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionPeople with subjective cognitive decline (SCD) and cognitive impairment, no dementia (CIND) have higher risks of dementia. This study investigated whether fixel-based and free-water (FW) metrics, which examine the white matter (WM) structure, differ in SCD and CIND and their relationships with cognition.
methodsWe analyzed cross-sectional data from 247 participants (median age = 63), separated into three groups: healthy controls (HC), SCD, and CIND.
resultsHC had lower fiber bundle cross-section (FbC) in the splenium than SCD. HC had higher FbC in the left cerebellum and higher fiber density in the corpus callosum than CIND, and SCD had higher FbC in the right cerebellum than CIND. CIND had higher FW in the temporal lobe and basal ganglia than HC and exhibited less extensive FW differences with SCD. Fixel-based and FW metrics associated positively and negatively with cognition, respectively. DISCUSSION: Fixel-based metrics have potential to detect WM changes associated with SCD.
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