sagittal sinus


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

sagittal sinus

Etymology: L, sagitta, arrow, sinus, hollow
either of two venous sinuses of the dura mater. The superior venous sinus begins near the crista galli and drains backward to empty into a confluence of sinuses near the occipital area. The inferior venous sinus begins in the lower margin of the cerebral falx and follows the superior venous sinus, emptying into the straight sinus.

sagittal sinus

The superior or the inferior sagittal sinus.
See also: sinus
References in periodicals archive ?
After selective thrombolysis and thrombectomy, superior sagittal sinus was recanalized.
It is suggested that a fragment of clot may be carried to superior sagittal sinus from pelvic veins by way of vertebral venous system, these veins being devoid of valves.
Thrombosis of the superior sagittal sinus was caused by a platelet-fibrin thrombus.
A magnetic resonance imaging (MRI) scan performed on the eighth day (Figure 2) showed nearcomplete resolution of the lesions seen on CT at admission and also excluded superior sagittal sinus thrombosis.
Transarterial intravenous coil embolization of fistula involving the superior sagittal sinus.
CSF pressure = Resistance to CSF outflow x m x CSF outflow rate + sagittal sinus pressure.
A computed tomography (CT) scan and magnetic resonance imaging performed the next morning showed blood clots in the brain, with complete occlusion of the superior sagittal sinus vein, and cerebral herniation.
The blood cultures and LP were negative but the MRI showed a sagittal sinus thrombosis.
Sagittal sinus thrombosis was among the possibilities mentioned.
The empty delta sign, pathognomonic of sagittal sinus thrombosis, can be seen sometimes on contrast CT.