1. Department of Diagnostic and Interventional Radiology and Neuroradiology, Bundeswehr Central Hospital Koblenz, Koblenz, Germany
2. Institute of Neuroradiology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
3. Department of Radiology and Nuclear Medicine, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany