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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

1 passage

contentuptodate· Content· item f13_14_13537

©2013 UpToDate ® Print Email CT scan signs of CVT A) Noncontrast head CT shows a hyperdense thrombosed cortical vein (arrow); B) Noncontrast head CT shows a hyperdensity in the torculae (black arrow) and the straight sinus (white arrow), a direct sign of dural sinus thrombosis (the dense triangle sign); C) Head CT shows non-filling of the confluent sinus after contrast injection (the empty delta sign).