1. From the Department of Radiology, Klinik Donaustadt, Langobardenstrasse 122, 1220 Vienna, Austria (H.R.); Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (H.R.); and Division of General Radiology, Department of Radiology, Medical University of Graz, Graz, Austria (P.A.).