Research Journal of Medical Sciences
ISSN: Online 1993-6095ISSN: Print 1815-9346
157
Views
34
Downloads
Abstract
The circle of Willis is a large anastomotic ring present at base of brain. Variations in circle of Willis are frequent, it is important to have knowledge of variations in the diagnosis and treatment of different cerebrovascular diseases. Main objective of present study is to know the formative pattern of circle of Willis, note the variations in circle of Willis. Present Study was conducted on 50 cadaveric specimens obtained from voluntary body donation at the department of anatomy and 100 radiological films who referred for neuroimaging magnetic resonance angiography of human brain of both sexes, for a period of 3 years. Based on present study out of 50 cadavers 40% of circles, out of 100 radiological films 46% of circles variations were identified. Attenuated vessels (hypoplasia) were frequent of all anomalies, in 9 circles (18%) of cadaveric study, 26 circles (26%) of MRA films, accessory vessels (duplication) – in 7 circles (14%) of cadaveric study, 6 circles (6%) of MRA study, absence of vessels (aplasia)‐in 4 circles (8%) of cadaveric study, 9 circles (9%) of MRA study, anomalous origin – in 5 circles (5%) of MRA study. Variations encountered in present study are attenuated vessels, accessory vessels and absence of vessels, anomalous origin. The most common anomaly of the circle of Willis in normal brains was hypoplasia of one or other components of the circle. Most frequent anomaly that encountered in this study was hypoplastic vertebral artery, followed by the circular part of the anterior communicating artery (A‐1 segment), in both MRA and cadavers. Anomalies of the circle of Willis play an important role in the occurrence, manifestation of symptoms, treatment options and recovery process of certain cerebrovascular disorders.
How to cite this article:
Vanju V.V. Lakshmi, Ramadevi Gara and Javeed Ahmad. Study on Variations of Circle of Willis in Cadaveric and Radiological Study‐in South Costal Population of Andhra Pradesh, India.
DOI: https://doi.org/10.36478/10.59218/makrjms.2023.4.616.621
URL: https://www.makhillpublications.co/view-article/1815-9346/10.59218/makrjms.2023.4.616.621