Abstract Background Circle of Willis is the main structure that provides constant and regular
blood flow to the brain, protects the brain from ischemia. Stroke has remained the second …

Objective. Circulus arteriosus/circle of Willis (CW) is a polygonal anastomotic channel at the
base of the brain which unites the internal carotid and vertebrobasilar system. It maintains …

Anomalies of the anterior cerebral artery (ACA) include the median ACA (MedACA),
bihemispheric ACA (BihemACA) and the azygos ACA. Knowledge of these anomalies can …

Objective: To identify the anatomical variations in cerebral arterial circle of Willis. Study
Design: Descriptive study. Place and Duration of Study: Department of Anatomy, University …

ABSTRACT Circulus arteriosus (Circle of Willis) is an anastomotic ring which unites the
internal carotid and vertebrobasilar systems. It slows down the blood before it reaches the …

BACKGROUND: Despite research in the anatomical sciences for the last 200 years, some
structures of the human body remain controversial or incompletely described. One of these …

Background: The circle of Willis (CW) is a vascular network formed at the base of skull in the
interpeduncular fossa. Its anterior part is formed by the anterior cerebral artery, from either …

The anterior cerebral artery (ACA) and its divisions enclose symptomatically critical and
supplementary differentiations. Anatomical variations of the distal ACA that are irregularly …

Background: To identify the anatomical variations in cerebral arterial circle of Willis in
patients with hemorrhagic stroke. Methods: Computerized tomographic (CT) angiograms of …

AIm: Endonasal transsphenoidal approaches are getting rapidly popular in removing many
midline skullbase lesions from crista galli to foramen magnum. For safe removal of these …