Use Of A Traumatic Brain Injury

1117 WordsOct 23, 20155 Pages
TBI termed as Traumatic Brain Injury is an intracranial injury that often occurs when an external force is applied on the brain. A 1.4 million people, every year in the United States experience TBI, as reported by the Centers for Disease Control and Prevention (CDC) [2]. Approximately 5.3 million Americans live with long-term disability as a result of TBI [4]. Advancements in the field of Magnetic Resonance Imaging (MRI) has helped image TBI better. Techniques like Susceptibility Weighted Imaging (SWI), Diffusion Tensor Imaging (DTI), and Magnetic Resonance Spectroscopy (MRS) helps in furnishing sensitive details like micro hemorrhages, white matter injury, and abnormal metabolic activities, respectively, in brain injury. In order to…show more content…
A Computed Tomography (CT) can be used to inspect large hemorrhages, that could be surgically excised, but in case of small hemorrhages, it is insensitive. Small hemorrhages could be early contusions or diffuse axon injury (DAI). SWI comes handy in determining such small hemorrhages and intracranial microhemmorhages. It is a high-resolution, fully velocity compensated, 3-dimensional gradient echo imaging sequence that is extremely sensitive to blood products in hemorrhage and deoxyhemoglobin in venous blood. Normally, CT and MRI would spot traumatic hemorrhagic lesions in cortical gray matter (GM), sub cortical white matter (WM), major white matter tracts, including corpus callosum and internal capsule, brainstem and in the ventricles. SWI helps in localizing microhemmorhages lesions at GM/WM junction. The research paper explores about a comparison of SWI and a conventional GRE performed by Tong et al. The outcome of it was a difference in lesion counts, which was highest in the brainstem/cerebellum and corpus callosum, while, lowest in the frontal & parietal-temporal-occipital GM/WM. The research article also reviews a study by Wu et al about patients with subarachnoid hemorrhage (SAH) using CT and SWI. The
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