Ivanov D. V. Russia Educational-Research Institute of Nanostructures and Biosystems of Saratov State University, 410012, г. Саратов, ул. Астраханская, 83 IvanovDV@info.sgu.ru Author's articles Analysis of Healthy and Pathological Human Willis Circle Arteries Hemodynamics and Mechanical Behavior of Pathologically Tortuous Carotid Arteries Threshold Values of Morphological Parameters Associated with Cerebral Aneurysm Rupture Risk