21. Summary Epidural hematoma (left) in which rupture of meningeal artery, usually associated with a skull fracture, leads to accumulation of arterial blood between the dura and the skull. In a subdural hematoma (right), damage to bridging veins between the brain and the superior sagittal sinus leads to the accumulation of blood between the dura and the arachnoid.
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23. CONTUSSION Acute cerebral contusion, there are low-density edema with flake high-density shadow(Asterisk) , accompanied with subarachnoid hemorrhage in the suprasellar pool, sylvian cistern and around the right falx cerebri(black arrow). The gas in the suprasellar pool indicates basal skull fractures(black arrowhead).
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Slide #9
Slide #17 Axial CT images of the brain show a large isodense right-sided subdural hematoma ( short arrows ) extending from the high convexities to the low frontal lobe. It is producing extensive right to left midline shift with subfalcine ( arrow )