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Diffuse Axonal Injury (DAI)

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  • 20-year-old male suffered a severe head injury following a skiing accident.
  • T2-weighted imaging showed mature contusional damage at the vertex.
  • SWI shows microhemorrhages at the grey-white matter interface, corpus callosum and brainstem.

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  • A 50-year-old patient suffered a severe head injury following a road traffic accident 3 years prior to presentation within worsening cognition.
  • MRI showed old parenchymal contusions in the left frontal and temporal lobes alongside an old contre-coup injury in the right occipital lobe.
  • SWI showed extensive superficial cortical siderosis secondary to traumatic subarachnoid haemorrhage.
  • There were many cortical or immediately subcortical microhaemorrhages. Some of the microhaemorrhages (e.g., in the right superior parietal lobe) were arranged linearly (red arrows).