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Peak width of skeletonized mean diffusivity and its association with age-related cognitive alterations and vascular risk factors
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Peak width of skeletonized mean diffusivity and its association with age-related cognitive alterations and vascular risk factors
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Journal Article
Peak width of skeletonized mean diffusivity and its association with age-related cognitive alterations and vascular risk factors
2019
Overview
Only two studies investigated the associations between peak width of skeletonized mean diffusivity (PSMD) and age-related cognitive alterations, whereas none of the studies investigated the association with vascular risk factors.
We evaluated 801 stroke- and dementia-free elderlies with baseline and 3-year follow-up assessments. Regression analyses were used to assess the association between age-related cognitive functions and PSMD. Simple mediation models were used to study the mediation effect of PSMD between vascular risk factors and age-related cognitive outcomes.
PSMD was negatively associated with processing speed at baseline and negatively associated with processing and memory scores at 3-year follow-up. The association between vascular risk factors and age-related cognition was mediated by PSMD, as well as other diffusion tensor imaging markers.
PSMD is preferred over other diffusion tensor imaging markers as it is sensitive to age-related cognitive alterations and calculation is fully automated. PSMD is proposed as a research tool to monitor age-related cognitive alterations.
Publisher
Elsevier Inc,Elsevier,Wiley
