Microscopic anatomy of the human vertebro-basilar system.

Anatomical Variations of Circle of Willis in 57 Human Brains

Purpose: The circle of willis is responsible for blood supply of brain, which may suffer from anatomical variations. These disturbances can lead to aneurysm or even arterial rupture. The purpose of this study was to evaluate the anatomical structure of the cerebral arteries forming the circle of willis in adult cadavers. Also, cerebral versus non- cerebral versus non-cerebral arterial walls wer...

MR-based, subject-specific computational fluid dynamics modeling of the vertebro-basilar system

Introduction. Intimal hyperplasia (IH) is a common cause of coronary artery bypass graft failure, and previous studies have demonstrated a correlation between IH and hemodynamic factors (e.g., wall shear stress) and used this correlation to influence graft design [e.g., 1-4]. The vertebrobasilar system is one of the few locations in the human arterial tree where two major arteries (vertebral ar...

Transient ischemic attack in the vertebro-basilar circulation due to a hemodynamically significant variation - kinking of the extracranial section of the left vertebral artery.

We present a case report of a 74-year old female patient with the clinical diagnosis of transient ischemic attack (TIA) in the vertebro-basilar (VB) circulation, in whom we found bilateral variation of the extracranial section of vertebral arteries on ultrasound, on the left side to the extent of kinking. This finding was later confirmed by magnetic resonance angiography (MRA). We discuss the p...

Variations in Diameters of Vertebro-basilar Tree in Patients with or with No Aneurysm

INTRODUCTION The morphological anatomy of the posterior circulation is very complex and variable. Aims of this research were to document the morphological anatomy of the posterior circulation along with variations in the Bosnian population, in patients with or without aneurysm. Measurements of the outer diameters of the vertebral artery, basilar artery and posterior cerebral artery were taken. ...

Skull Base Approaches for Vertebro-Basilar Aneurysms