petrosal sinuses

petrosal sinuses

channels, superior and inferior, that drain the cavernous sinuses into the transverse sinuses. The superior petrosal sinuses receive cerebral and cerebellar veins, whereas the inferior petrosal sinuses receive cerebellar veins and veins from the internal ear and brainstem. Basilar sinuses connect the inferior petrosal sinuses to each other and to the vertebral plexus of veins.
References in periodicals archive ?
Superior and inferior ophthalmic veins, (SOV, IOV) drain into CS which in turn drain into the superior and inferior petrosal sinuses [Figure 1].
During the procedure, cerebral angiography demonstrated an 80% stenosis of the left ICA and an ipsilateral direct CCF draining into the contralateral cavernous sinus via the intercavernous sinuses, posteriorly into the internal jugular veins through the inferior petrosal sinuses (Fig.
c and d Left ICA angiography showing the high-grade stenosis (white arrow) and a direct carotid-cavernous fistula (CCF) that drained into contralateral cavernous sinus via the intercavernous sinuses, and posteriorly into the internal jugular veins through the inferior petrosal sinuses.
After the correct placement of the catheters, simultaneous blood samples are obtained from the periphery, left and right inferior petrosal sinuses, and CRH or DDAVP is injected, and post-injection ACTH samples are obtained from each of the two sinuses and periphery at 3, 5, 10 and 15 minutes (3,14).