1 Department of Neurology, University Medicine Centre Rostock, University of Rockstock, Gehlsheimer Str. 20, 18147, Rostock, Germany. matthias.wittstock@med.uni-rostock.de.
2 Department of Diagnostic and Interventional Radiology, University Medical Centre Rostock, University of Rockstock, Rockstock, Germany.
3 Department of Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, University of Rockstock, Rockstock, Germany.