TBI is the leading cause of acquired disability of young adults and due to the subtle nature, conventional scans show no evidence of injury. In this multi-shell longitudinal diffusion MRI study of mTBI in rat brain we found that DKI and white matter metrics can be used to follow up recovery in the brain at least until one week after injury. Moreover, histological analysis showed that changes in the metrics could be explained by inflammation and neurofilament compaction. On the other hand, DTI metrics could not differentiate between the sham and TBI group and were comparable in the two groups.
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