Non-contrast CT brain shows hydrocephalus and hyperdense internal cerebral veins and great cerebral vein, compatible with acute thrombosis. Hyperdense thrombus is also partially filling the superior sagittal sinus.

A dense triangle sign is sometimes seen in thrombosis of the superior sagittal sinus. Dural sinus and cerebral vein thrombosis may occur as a complication of infections such as meningitis, and can cause complications such as venous hemorrhagic infarct.