1. Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
2. Department of Radiology, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany
3. Department of Radiology, University Hospitals Tübingen, Germany
4. Institute of Medical Physics, Nuremberg General Hospital, Paracelsus Medical University, Nuremberg, Germany
5. Department of Diagnostic and Interventional Radiology, Heinrich-Heine-University, Düsseldorf, Germany
6. Department of Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany
7. Department of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
8. Department of Radiology, University Hospital Erlangen, Germany
9. Institute for Diagnostic and Interventional Radiology, Goethe University Frankfurt, Frankfurt am Main, Germany
10. Radiologische Allianz, Hamburg
11. Clinic for Radiology, Westfaelische Wilhelms-University Muenster, Münster, Germany
12. Institute for Diagnostic and Interventional Neuroradiology, University Hospital Carl Gustav Carus, Dresden, Germany
13. Institute of Diagnostic Radiology, University Hospital Regensburg, Germany
14. Administrative Office, German Roentgen Society, Berlin, Germany
15. Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
16. Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Germany
17. Diagnostic and Interventional Radiology, Helios Klinikum Krefeld, Germany
18. Department of Radiology, University of Wisconsin, Madison, Wisconsin, United States