1. Department of Diagnostic and Interventional Radiology, Eberhard-Karls University, Hoppe-Seyler-Strasse 3, Tübingen 72076, Germany
2. Department of Trauma and Reconstructive Surgery, BG Unfallklinik, Eberhard-Karls University, Tübingen, Germany
3. Radiologikum Krefeld, Krefeld, Germany
4. Department of Diagnostic Radiology, BG Unfallklinik, Eberhard-Karls University, Tübingen, Germany