Document Type : Research Article
Abstract
The venous system of the brain is a complicated system that is distinct from the venous systems of the other sections of the body because it does not adhere to the standard pattern of the cerebral artery system.1Both the cerebral veins and the dural sinuses lack valves and do not have tunica muscularis, which would otherwise enable the veins to enlarge and stay dilated in response to even prolonged blockage. Because veins do not have valves, blood can flow in both ways via them, which can lead to an infection spreading throughout the brain from the scalp and mastoid air cells. In order to diagnose normal variant cerebral venous sinus, it is vital to have knowledge of the normal variant in the anatomy of the cerebral dural venous sinus visible on magnetic resonance (MR) venography.1The precise functions of the major dural venous sinuses vary from one another depending on their position inside the cranium and the related structures of the cranium that are traversed by the sinuses. 2
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