Abstract:
PRIMARY OBJECTIVE:To explore whether baseline diffusion tensor imaging (DTI) metrics are predictive of cognitive functioning 6 months post-injury in patients with mild traumatic brain injury (MTBI). RESEARCH DESIGN:Seventeen patients with MTBI and 29 sex- and age-matched healthy controls were studied. METHODS AND PROCEDURES:Participants underwent an MRI protocol including DTI, at an average of 4.0 (range: 1-10) days post-injury. Mean diffusivity (MD) and fractional anisotropy (FA) were measured in the following white matter (WM) regions: centra semiovale, the genu and the splenium of the corpus callosum and the posterior limb of the internal capsule. Participants underwent neuropsychological (NP) testing at baseline and at 6-month follow-up. Least squares regression analysis was used to evaluate the association of MD and FA with each NP test score at baseline and follow-up. MAIN OUTCOMES AND RESULTS:Compared to controls, average MD was significantly higher (p = 0.02) and average FA significantly lower (p = 0.0001) in MTBI patients. At the follow-up, there was a trend toward a significant association between baseline MD and response speed (r = -0.53, p = 0.087) and a positive correlation between baseline FA and Prioritization form B (r = 0.72, p = 0.003). CONCLUSIONS:DTI may provide short-term non-invasive predictive markers of cognitive functioning in patients with MTBI.
journal_name
Brain Injjournal_title
Brain injuryauthors
Miles L,Grossman RI,Johnson G,Babb JS,Diller L,Inglese Mdoi
10.1080/02699050801888816subject
Has Abstractpub_date
2008-02-01 00:00:00pages
115-22issue
2eissn
0269-9052issn
1362-301Xpii
790199890journal_volume
22pub_type
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