Cerebral venous volume above the lateral ventricle was analyzed using quantitative susceptibility mapping in patients with severe (n = 7), moderate (n = 21) and mild (n = 27 for blast and n = 19 for nonblast) TBI. Severe and moderate TBI patients both demonstrated increased venous volume compared to control subjects without history of TBI. Blast injured mild TBI patients also showed increased venous volume compared to the control subjects. These results suggest that microvascular injury may present in TBI patients and blast related injury might have a more pronounced impact on the venous system.
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