The circle of Willis is a junction of several important arteries at the bottom part of the brain. Learn more about its anatomy, function, and more.

The image depicts the anatomy of the circle of Willis (A) and representative subjects with a complete (B) and incomplete circle of Willis (C).

Migraine with Aura Is Associated with an Incomplete Circle of Willis: Results of a Prospective Observational Study. PLoS ONE , 2013; 8 (7): e71007 DOI: 10.1371/journal.pone.0071007 Cite This Page : ...

References [1] Machine learning-based pulse wave analysis for classification of circle of Willis topology: An in silico study with 30,618 virtual subjects. Biomedical Signal Processing and Control ...

Of the people in the study who suffered from migraine with aura, 73% had an incomplete circle of Willis, as did 67% of people who had migraines without aura. This compared with 51% of the healthy ...