What question did this study set out to answer?

Investigate the variability of posterior cerebral artery and posterior communicating artery anatomy in clinical contexts.

March 28, 2026Open Access

The anatomy of the posterior cerebral artery — a detailed analysis

Key Points

Investigate the variability of posterior cerebral artery and posterior communicating artery anatomy in clinical contexts.
Detailed anatomical analysis of posterior circulation structures.
Examination of neuroimaging techniques for accuracy in vascular assessment.
Consideration of demographic influences on vascular features.
Variability in PCA and PCoA anatomy is common and should inform clinical interpretations.
Atypical configurations are prevalent, necessitating personalized approaches in evaluating neuroimaging.
Demographic factors significantly affect vascular morphology, supporting individualized care.

Abstract

The present study emphasizes that variability of the PCA and PCoA is the rule rather than the exception and should be regarded as a clinically meaningful feature of cerebral circulation. The high prevalence of incomplete or atypical posterior circle configurations highlights the need for careful, individualized interpretation of neuroimaging, particularly in the context of ischemic stroke mechanisms, collateral capacity, and treatment planning. Demographic influences on vascular morphology further support the importance of considering patient-specific factors rather than relying on simplified anatomical models. Overall, consistent definitions and population-based data are essential for translating anatomical knowledge of the posterior circulation into reliable clinical and radiological practice.

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