Vertebrobasilar System

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Vertebrobasilar System

Main Text

TERMINOLOGY

Abbreviations

• Vertebrobasilar (VB), vertebral artery (VA), basilar artery (BA)
• Superior cerebellar arteries (SCAs), posterior inferior cerebellar artery (PICA), anterior inferior cerebellar artery (AICA)
• Internal carotid artery (ICA)
• Anterior spinal artery (ASA), posterior spinal artery (PSA)

GROSS ANATOMY

Overview

• 4 VA segments

IMAGING ANATOMY

Overview

• Ectasia, tortuosity, off-midline course, variations in configuration/branching patterns common

Anatomy Relationships

• VA
• BA
- Courses superiorly in prepontine cistern (in front of pons, behind clivus)
- Bifurcates into its terminal branches, posterior cerebral arteries (PCAs), in interpeduncular or suprasellar cistern at/slightly above dorsum sellae

Branches

• VA
• BA

Vascular Territory

• VA
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Tags: Imaging Anatomy Brain and Spine

Mar 13, 2021 | Posted by admin in NUCLEAR MEDICINE | Comments Off

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