Subacute subdural haematoma – can be difficult to identify on…
Subacute subdural haematoma – can be difficult to identify on non-contrast CT as the blood is isodense to brain parenchyma (the same density). When the subdural haemorrhage is unilateral then midline shift will be the major clue as to its presence. The above case shows bilateral symmetric subdural haematomas with isodense blood peripherally (*) causing inward displacement of the grey-white matter junction (blue line). This is better appreciated following contrast administration as the cortex becomes more dense and cortical vessels are seen (red arrows).
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