1. Department of Radiology, University Hospital Muenster, DE-48149 Muenster, Germany
2. Department of Neurosurgery, University Hospital Muenster, DE-48149 Muenster, Germany
3. Institute of Neuropathology, University Hospital Muenster, DE-48149 Muenster, Germany
4. Department of Neuropathology, University Hospital Magdeburg, 39120 Magdeburg, Germany
5. Institute for Diagnostic and Interventional Radiology, Caritas-Hospital, DE-97980 Bad Mergentheim, Germany