Venous Anatomy

Intracranial Venous System Superficial veins Superficial cortical veins are thin-walled, valveless, and traverse the subarachnoid space within the cerebral sulci Superior: 8-12 smaller cortical veins over hemispheres Dominant superior anastomotic vein of Trolard Middle: Variable superficial middle cerebral veins Dominant middle anastomotic vein of Labbé Inferior: middle cerebral veins, basal vein of Rosenthal Medullary veins Small, linear venous branches originating in the subcortical white matter Course towards ventricles, terminate in subependymal veins Deep veins Subependymal veins Along the margins of the ventricles Septal veins Course posteriorly along septum pellucidum Join with transverse sinus to form internal cerebral veins at interventricular foramen Thalamostriate veins Receive caudate veins that course anteriorly between caudate nucleus, thalamus Curve over caudate nuclei Terminate...

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