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Cerebral venous thrombosis | Radiology Reference Article
2024年2月6日 · Thrombus can appear as a hyperdense vein or sinus for the first 7-14 days; this is an accurate sign when present 6. With contrast administration, especially with a CT venogram, a filling defect in a sinus is sought. When in the superior sagittal sinus it …
Superior sagittal sinus thrombosis | Radiology Case
Superior sagittal sinus thrombosis with left sided high frontal convexity and high parasagittal acute infarcts.
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Empty delta sign (dural venous sinus thrombosis)
2023年7月9日 · The empty delta sign is a CT sign of dural venous sinus thrombosis of the superior sagittal sinus, where contrast outlines a triangular filling defect, which represents thrombus. It is only described in contrast-enhanced CT, not in unenhanced scans.
Dural venous sinus thrombosis and intracranial hypertension
CT venogram confirms the presence of superior sagittal sinus thrombosis with empty delta sign. It also demonstrates bilateral narrowing of the distal transverse sinuses without thrombosis of these vessels.
Superior sagittal sinus thrombosis | Radiology Case
Focal hyperdensity (roughly 70 HU) in the superior sagittal sinus spanning 6-7 cm with surrounding hyperdense cortical veins.
Cerebral sinus venous thrombosis with lobar haemorrhage
Extensive filling defects involving the cerebral superficial cortical veins, superior sagittal sinus extending to the torcular herophili, right transverse sinus, and right sigmoid sinus.
Dural venous sinus thrombosis | Radiology Reference Article ...
2024年2月9日 · a potential pitfall is interpreting the distal superior sagittal sinus as being hyperdense near the torcula herophili; it is important to appreciate that normal blood within the dural sinuses is usually of slightly increased density relative to brain parenchyma and that true hyperdensity is the key to recognizing thrombosis
Superior sagittal sinus thrombosis | Radiology Case
Extensive sinus thrombosis involving most of the superior sagittal sinus except the posterior portion. There is an area of high T2 signal with diffusion restriction (DWI sequence not posted in this case) demonstrated in the left frontal lobe suggestive of venous infarction.
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