Obtaining vortex formation in vessel with stenosis by ultrasonic echolocation: experimental research and computer simulation. - Starodumov, Ilya; Makhaeva, Ksenia; Sokolov, Sergey; Kuzmin, Pavel; Bessonov, Ivan; Shadrin, Artem; Nikishina, Margarita; Chestukhin, Vasiliy; Blyakhman, Felix; Fedotov, Sergei (European Physical Journal: Special Topics, 2026)