Boomerang sign on MRI.

Neurocritical Care
Karen G Hirsch, Robert E Hoesch

Abstract

Altered mental status and more subtle cognitive and personality changes after traumatic brain injury (TBI) are pervasive problems in patients who survive initial injury. MRI is not necessarily part of the diagnostic evaluation of these patients. Case report with relevant image and review of the literature. Injury to the corpus callosum is commonly described in traumatic brain injury; however, extensive lesions in the splenium are not well described. This image shows an important pattern of brain injury and demonstrates a common clinical syndrome seen in patients with corpus callosum pathology. Injury to the splenium of the corpus callosum due to trauma may be extensive and can cause significant neurologic deficits. MRI is important in the diagnostic evaluation of patients with cognitive changes after TBI.

References

Sep 25, 2002·European Radiology·K HerganT A G M Huisman
Mar 16, 2005·Archives of Neurology·Michael J DohertyDan K Hallam
Oct 14, 2005·The Journal of Head Trauma Rehabilitation·Douglas H SmithWilliam H Shull
Jul 26, 2011·Journal of Neurosurgery·Hidetoshi MatsukawaRyoichi Ishikawa

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brain injury after impact to the head is due to both immediate mechanical effects and delayed responses of neural tissues.

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