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Types of the cerebral arterial circle (circle of Willis) in a Sri Lankan Population |
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| Authors: | K Ranil D De Silva Rukmal Silva Dhammika Amaratunga WSL Gunasekera Rohan W Jayesekera |
| Affiliation: | (1) Department of Anatomy, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka;(2) Department of Nonclinical Statistics, Johnson & Johnson Pharmaceutical Research & Development, Raritan, NJ, USA;(3) National Hospital of Sri Lanka, Colombo, Sri Lanka;(4) Department of Anatomy, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka |
| Abstract: | BackgroundThe variations of the circle of Willis (CW) are clinically important as patients with effective collateral circulations have a lower risk of transient ischemic attack and stroke than those with ineffective collaterals. The aim of the present cadaveric study was to investigate the anatomical variations of the CW and to compare the frequency of prevalence of the different variations with previous autopsy studies as variations in the anatomy of the CW as a whole have not been studied in the Indian subcontinent. |
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