variations in the circulus arteriosus of willis: autopsy findinds in 101 human cadav ers

نویسندگان

gholamhussain khosravi from the depts. of neurosurgery, neurology tehran university of medical sciences, tehran, i.r. iran.

seyed ali fakhr tabatabai

majid ghafarpour from the depts. of neurosurgery, neurology tehran university of medical sciences, tehran, i.r. iran.

hassan toufighi from the depts. of forensic medicinetehran university of medical sciences, tehran, i.r. iran.

چکیده

in order to evaluate the microvascular anatomy and the interconnections, 101 fixed brains from human cadavers with a mean age of 41.3 years were subjected to objective scrutiny. symmetry was visualized with an unaided eye and measurements made under microscopic magnification technique using a micrometer. classic symmetry was observed in only 19 of the specimens, whereas the rest of the 82 specimens revealed considerable variations in the form of diverse anomalies. these anomalies consisted of hypoplasia (45 cases), duplication (40 cases), triplication (6 cases), fenestration (6 cases), aplasia (5 cases), aneurysm (2 cases), common trunk (1 case) and a rare presentation where the internal carotid artery was found to have anastomosis with the posterior cerebral artery. the frequency of anatomic variations and the presence of prevalent anomalies at the circle of willis underscore the difficulty in understanding various cerebral vascular diseases and their anatomical knowledge and information serve to adopt effective strategies in tackling such microvascular diseases.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

VARIATIONS IN THE CIRCULUS ARTERIOSUS OF WILLIS: AUTOPSY FINDINDS IN 101 HUMAN CADAV ERS

In order to evaluate the microvascular anatomy and the interconnections, 101 fixed brains from human cadavers with a mean age of 41.3 years were subjected to objective scrutiny. Symmetry was visualized with an unaided eye and measurements made under microscopic magnification technique using a micrometer. Classic symmetry was observed in only 19 of the specimens, whereas the rest of the 82...

متن کامل

Anatomical Variations of the Circulus Arteriosus in Cadaveric Human Brains

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 the steady and constant supply to the brain. The variations of CW are seen often. The Aim of the present work is to find out the percentage of normal pattern of CW, and the frequency of variations of the CW an...

متن کامل

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...

متن کامل

The Anatomy of Circulus Arteriosus Cerebri (Circle of Willis): A Study in Turkish Population.

AIM The function of the circle of Willis, an arterial polygon, is to protect the brain from ischemia. The aim of this study is to define the structural characteristics of the circle of Willis within the Turkish adult population, along with variations and arteries involved in the measurement of diameters and lengths on cadavers. MATERIAL AND METHODS The circle of Willis was evaluated in 100 fr...

متن کامل

the effect of the record infancy in crimilly acts of guilties (in karaj city)

چکیده یکی از مهمترین دغدغه های بزرگ جوامع بشری، از دیر باز تا کنون که ذهن پژوهشگران و متخصصان بهداشت روانی و اجتماعی و دولتها رابه خود مشغول داشته، مسأله ی بزهکاری می باشد. شناخت کامل پدیده ی بزهکاری و بزهکار، علل وعوامل سقوط یک انسان، چگونگی درمان وی و درنهایت پیشگیری ازبزهکاری ودریک کلام سالم سازی یک جامعه، رسالت عظیم، انسانی ومقدسی می باشد که با بررسی شخصیت مجرم یعنی[ انسانی که تحت شرای...

15 صفحه اول

the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
medical journal of islamic republic of iran

جلد ۱۵، شماره ۱، صفحات ۱-۵

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023