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REVIEW
Year : 2014  |  Volume : 9  |  Issue : 12  |  Page : 1222-1230

Diffuse axonal injury after traumatic cerebral microbleeds: an evaluation of imaging techniques


1 Department of Radiology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China ; Department of Biomedical Engineering and Radiology, School of Medicine, Wayne State University, 3990 John R St, Detroit, MI, USA; School of Public Administration, Central South University, Changsha, Hunan Province, China
2 Department of Biomedical Engineering and Radiology, School of Medicine, Wayne State University, 3990 John R St, Detroit, MI, USA
3 School of Public Administration, Central South University, Changsha, Hunan Province, China

Correspondence Address:
Yongquan Tian
M.D, School of Public Administration, Central South University, Changsha 410083, Hunan Province

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Source of Support: This study was supported by grants from the State-Funded Construction Projects Key Clinical Specialist (2013-2015) and the Hunan Provincial Science and Technology Department, No. 2009FJ3092., Conflict of Interest: None


DOI: 10.4103/1673-5374.135330

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Previous neuropathological studies regarding traumatic brain injury have primarily focused on changes in large structures, for example, the clinical prognosis after cerebral contusion, intracerebral hematoma, and epidural and subdural hematoma. In fact, many smaller injuries can also lead to severe neurological disorders. For example, cerebral microbleeds result in the dysfunction of adjacent neurons and the disassociation between cortex and subcortical structures. These tiny changes cannot be adequately visualized on CT or conventional MRI. In contrast, gradient echo sequence-based susceptibility-weighted imaging is very sensitive to blood metabolites and microbleeds, and can be used to evaluate traumatic cerebral microbleeds with high sensitivity and accuracy. Cerebral microbleed can be considered as an important imaging marker for diffuse axonal injury with potential relevance for prognosis. For this reason, based on experimental and clinical studies, this study reviews the role of imaging data showing traumatic cerebral microbleeds in the evaluation of cerebral neuronal injury and neurofunctional loss.


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