1. Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
2. Else Kröner Forschungskolleg Clonal Evolution in Cancer University Hospital Cologne Cologne Germany
3. Department of Radiology, Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
4. Center for Neurosurgery, University of Cologne, Faculty of Medicine and University Hospital Cologne Cologne Germany
5. Department of Neurology Faculty of Medicine and University Hospital Cologne, University of Cologne Köln Germany
6. Institute of Neuroscience and Medicine (INM‐3), Research Center Juelich Juelich Germany
7. Center of Integrated Oncology (CIO) Universities of Aachen Bonn, Cologne and Duesseldorf Germany