1 Second Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, 'Attikon' University General Hospital, 1 Rimini Str, 12462, Haidari/Athens, Greece. dfilippiadis@med.uoa.gr.
2 Center for Radiology, Minimally-Invasive Therapies and Nuclear Medicine, SLK Kliniken GmbH Heilbronn, Heilbronn, Germany.
3 Danube Private University, Krems, Austria.
4 Institute for Diagnostic and Interventional Radiology, Klinikum Klagenfurt am Wörthersee, 9020, Klagenfurt, Austria.
5 IR Clinic, MRI Group, Hofwiesenstrasse 349, 8050, Zürich, Switzerland.