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Abstract #4906

DTI/DKI Biomarkers of Chronic mild Traumatic Brain Injury

Donghoon Lee1 and James Meabon1,2
1University of Washington, Seattle, WA, United States, 2VA Puget Sound Health Care System, Seattle, WA, United States

Synopsis

Keywords: Biomarkers, Traumatic brain injury

Motivation: Imaging biomarkers accurately diagnosing and monitoring treatment response for chronic mild Traumatic Brain Injury (mTBI) are needed.

Goal(s): This study aimed to experimentally validate and determine the performance of MRI biomarkers for monitoring chronic repetitive mild traumatic brain injury (mTBI).

Approach: We used diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI) to assess white matter injury in mouse brains with chronic mTBI and compared results with those for age-matched control brains.

Results: Reduction in fractional anisotropy and increase of axial kurtosis were observed in the medulla of mTBI brains compared to the parameters in the same region of control brains.

Impact: It is new to monitor DTI and DKI parameters as noninvasive biomarkers in the brain with chronic mTBI.

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