Variations in Cerebrovascular Anatomy

  • T. A. Lie


This chapter is, in part, an updated revision of sections of Congenital Anomalies of the Carotid Artery (175). Intracranial aneurysms are an integral part of the cerebral arterial circulation. This chapter describes some of the important variations in the vascular anatomy derived from embryologic growth and aberrations. The various carotid-basilar anastomoses, carotid- vertebral anastomoses, internal carotid aplasias, and carotid-anterior cerebral anastomoses are discussed. Many are associated with cerebral aneurysms. Finally, the superior orbital branch of the middle meningeal artery (the meningo-orbital artery), now commonly seen by surgeons drilling down the sphenoid wing for basal exposures, is described.


Internal Carotid Artery Vertebral Artery Basilar Artery Ophthalmic Artery Middle Meningeal Artery 
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  • T. A. Lie

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