1. Department of Clinical Radiology; University Hospital Münster; Münster Germany
2. Department of Neuroradiology; Asklepios Clinic Nord-Heidberg; Hamburg Germany
3. Department of Neurosurgery; University Hospital Münster; Münster Germany
4. Institute of Neuropathology; University Hospital Münster; Münster Germany
5. Philips Healthcare; Clinical Application; Lübeckertordamm Hamburg Germany
6. Department of Radiology, Division of Diagnostic and Interventional Neuroradiology; University Hospital Basel