Brain injury : [BI]
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Brain injury : [BI] · Jul 2009
Comparative StudyComparative evaluation of corpus callosum DTI metrics in acute mild and moderate traumatic brain injury: its correlation with neuropsychometric tests.
To look for differences in vulnerability of corpus callosum (CC) in patients of mild and moderate traumatic brain injury (TBI) in the acute stage using quantitative diffusion tensor imaging (DTI) and to correlate these with neuropsychometric tests (NPT) done at 6 months post-injury. RESEARCH DESIGN, METHODS AND PROCEDURES: Conventional MRI, DTI and NPT were performed on 83 patients (moderate TBI, n = 57; mild TBI, n = 26) within 5-14 days after TBI. Thirty-three age- and sex-matched healthy controls were also included for comparison. ⋯ It is concluded that DTI abnormalities in the regions of CC were more in patients with moderate TBI compared to mild TBI and this was associated with relatively poor neuropsychological outcome 6 months post-injury.
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Brain injury : [BI] · Jul 2009
Costs, mortality likelihood and outcomes of hospitalized US children with traumatic brain injuries.
To examine the hospitalization costs and discharge outcomes of US children with TBI and to evaluate a severity measure, the predictive mortality likelihood level. ⋯ The PMLL may provide a useful tool to assess characteristics and treatment outcomes of hospitalized TBI children, but more research is still needed.
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Brain injury : [BI] · Jul 2009
Assessment of thalamic perfusion in patients with mild traumatic brain injury by true FISP arterial spin labelling MR imaging at 3T.
To assess cerebral blood flow (CBF) changes in patients with mild traumatic brain injury (MTBI) using an arterial spin labelling (ASL) perfusion MRI and to investigate the severity of neuropsychological functional impairment with respect to haemodynamic changes. ⋯ Haemodynamic impairment can occur and persist in patients with MTBI, the extent of which is more severe in thalamic regions and correlate with neurocognitive dysfunction during the extended course of disease.
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Hemiparesis ipsilateral to a mass-occupying lesion can be due to Kernohan-Woltman Notch Phenomenon (KWNP). This syndrome implies a false-localizing sign because clinical findings lead the examiner to an incorrect neuroanatomical diagnosis. The contralateral crus cerebri (pyramidal tract) is pressed against the tentorial incisum and a resultant hemiparesis is found on the same side of the lesion. ⋯ Not infrequently, patients presenting to a physiatrist may have incomplete records. The existence of false localizing signs may point the physician towards the wrong underlying pathology.