Dec 8, 2025 · 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.

Aug 29, 2025 · unilateral or bilateral cortical or peripheral venous hemorrhage, including the cashew nut sign With contrast administration, especially with a CT venogram, a sinus filling …

Case Discussion The delta (non-contrast study) and empty delta (contrast study) signs are exquisitely demonstrated on this CT study.

Feb 2, 2025 · unilateral or bilateral venous hemorrhage, including the cashew nut sign With contrast administration, especially with a CT venogram, a filling defect in the sinus is sought.

The Greek letter delta (Δ), shaped like a triangle, is used in radiology to describe the triangular filling defect seen in dural venous sinus thrombosis (typically the superior sagittal sinus) on …

The delta shape is probably most known to the public at large in the shape of the wings of the supersonic aeroplane, Concorde.

CT venography demonstrates hypoattenuating thrombus in the posterior sagittal sinus, the straight sinus, as well as the transverse and sigmoid sinus especially on the left, extending into …

This was followed by a CT venogram which showed a filling defect in the superior sagittal sinus (empty delta sign) as well as filling defects in the torcular herophili, left sigmoid sinus and left …

Dec 5, 2025 · With contrast administration, especially with a CT venogram, a filling defect in a sinus is sought. When in the superior sagittal sinus it is referred to as the ' empty delta sign '. …

Evidence of a filling defect is noted in the left transverse sinus, extending into the sigmoid sinus and internal jugular vein. An empty delta sign is observed in the left transverse sinus on the …