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Diffuse axonal injury in the performance of CT


Head acceleration due to sports injuries. Angular movement, especially in brain tissue by shear force changes, the pathological changes of the distortion of the main nerve axon, swelling, diffuse fracture axoplasm spillover and the appearance of retraction balls. Accompanied by bending damage small blood vessels, resulting in diffuse spots and small pieces bleeding. Because hemorrhage, brain swelling and increased the degree of intracranial hypertension. Diffuse axonal injury (performance has the following characteristics:, y296 Zhenjiang Medical College JOURNALOF whetstone Ⅱ NCMEDICALCOLLEGEo00, 10 (2) ① diffuse brain swelling: CT image shows bilateral diffuse parenchymal low density areas, and in A few days after injury, review the more obvious, no realm of low-density areas, gray, since the quality of the interface between the vague, including the basal ganglia, deep brain structures can not be resolved to ask. If CT room doctor were very inexperienced, or may not pay attention only considered to be mild brain injury. If the injury to the short time for inspection and no significant bleeding, or even that the CT examination found no abnormalities. ② no significant midline shift: Because it is diffuse brain swelling, swelling of the brain tissue both sides of the midline structures to offset the stress, it is generally no significant midline shift, unless the merger when the subdural or epidural hematoma. But even if Taiwan and a subdural or epidural hematoma, the bleeding less ,[link widoczny dla zalogowanych], midline shift showed only mild. because extensive brain swelling, increased intracranial pressure, can result in intracranial pressure compartment containing liquid, especially the oppression of the ventricular system is more evident. this group of patients in 9 patients with ventricular compression performance ③ the performance of diffuse axonal injury is often associated with clinical symptoms and signs are not entirely consistent, which may be brain damage was severe in all parts of the relevant. this group of patients with 2 patients with dural small pieces under the hematoma and brain hemorrhage. the patient improved and discharged after treatment. and 5 deaths, 3 were Cr performance with only diffuse low density areas scattered haemorrhagic dots, ineffective treatment of patients who died in hospital later. So traumatic brain injury patients in the examination, such as found in patients with confusion or coma, neurological signs nor a clear position, combined with the performance of CT scans, the brain should be considered the diagnosis of diffuse axonal injury