The circle of Willis (CW) is an anastomotic system of arteries located at the base of the brain. The aim of the study was to evaluate the anatomic configuration of the CW in the Polish population and to compare results with previously conducted research. Brains were obtained from 100 recently deceased human adults, and the diameters of cerebral vessels were measured using a slide caliper. Cerebral vessels were observed, paying attention to their origin, diameter, typical configuration and variations. Twenty-seven percent of cases presented the typical literature pattern. The remaining 73 

作者：Wies?awa, Klimek-Piotrowska；Monika, Rybicka；Aleksandra, Wojnarska；Agnieszka, Wójtowicz；Mateusz, Koziej；Mateusz K, Ho?da

来源：Anatomical science international 2016 年 91卷 4期