Ludomir Stefańczyk1, Marcin Majos2, Agata Majos1, Michał Polguj3. 1. Department of Radiology, Medical University of Łódź, Łódź, Poland. 2. Department of Angiology, Medical University of Łódź, Łódź, Poland. 3. Department of Angiology, Medical University of Łódź, Łódź, Poland michal.polguj@umed.lodz.pl.