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1. Citation: Oehr, L. & Anderson, J. (2017). Diffusion-tensor imaging findings and cognitive function following hospitalized mixed-mechanism mild traumatic brain injury: A systematic review and meta-analysis. Archives of Physical Medicine and Rehabilitation, 98(11), 2308-2319. 
Keywords: Brain injuries, cognition, imaging, literature reviews, outcomes
Abstract: This review examined the relationship between microstructural damage and cognitive function after hospitalized mixed-mechanism (HMM) mild traumatic brain injury (mTBI), which most commonly result from motor vehicle collisions and falls. PsycInfo, EMBASE, and MEDLINE were searched to find relevant empirical articles published between January 2002 and January 2016 that examined the specific relationship between diffusion tensor imaging (DTI) and cognitive test performance. Specific data were extracted including mTBI definitional criteria, descriptive statistics, outcome measures, and specific results of associations between DTI metrics and cognitive test performance. Of the 248 original articles retrieved and reviewed, 8 studies met all inclusion criteria and were included in the meta-analysis. The meta-analysis revealed statistically significant associations between reduced white matter integrity and poor performance on measures of attention, memory, and executive function, which persisted beyond 1 month postinjury. The findings from the meta-analysis provide clear support for an association between in vivo markers of underlying neuropathology and cognitive function after mTBI. Furthermore, these results demonstrate clearly for the first time that in vivo markers of structural neuropathology are associated with cognitive dysfunction within the domains of attention, memory, and executive function. These findings provide an avenue for future research to examine the causal relationship between mTBI-related neuropathology and cognitive dysfunction. Furthermore, they have important implications for clinical management of patients with mTBI because they provide a more comprehensive understanding of factors that are associated with cognitive dysfunction after mTBI.
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Record Updated:2018-10-26

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