3D Patient Specific Models of the Circle of Willis

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...

Variations of the Circle of Willis in 100 Cadavers in Kerman Province

Background & Aims: The relationship between variations of Willis circle and some cerebrovascular diseases has been shown in previous studies. A few studies have been conducted in Iran on these variations. Methods: This study was performed on 100 recently deceased Iranians due to car accidents who had been referred to Kerman Forensic Medicine Center for autopsy. The length and diameter of cerebr...

A Spectacular Endoscopic Anatomy of the Pituitary Gland and the Circle of Willis in a Living Person

بررسی واریاسیونهای آناتومیک حلقه عروقی مغز(حلقه ویلیس) از طریق آنژیوگرافی مغزی

ABSTRACT Anatomical variations have great importance among various medical disciplins. The significance of these variations differ from some points of view including system, site and degree of variation. Vascular system is a common site of variations. The importance of this system in supplying the organs, specially the brain has made it to be in focus for its variations. The main sourc...

Numerical Analysis of Blood Flow in the Dysplastic Circle of Willis Using One-dimensional Patient-Specific Model

In this work, aiming at studying the impact of anatomical variations in the circle of Willis on the capacity of collateral blood supply, a computational scheme for constructing the patient-specific one-dimensional geometric models has been developed based on computerized tomography images. The lengths and diameters for different structures of circle of Willis (CoW) are extracted. Blood flow in ...

Modeling the Circle of Willis Using Electrical Analogy Method under both Normal and Pathological Circumstances

Background and objective: The circle of Willis (COW) supports adequate blood supply to the brain. The cardiovascular system, in the current study, is modeled using an equivalent electronic system focusing on the COW.Method: In our previous study we used 42 compartments to model whole car- diovascular system. In the current study, nevertheless, we extended our model by using 63 compartments to m...