1 Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam 1016RV, Netherlands.
2 University Institute of Diagnostic and Interventional Neuroradiology, University Hospital Bern, University of Bern, Bern, Switzerland.
3 Department of Neurology, University Hospital Bern, University of Bern, Bern, Switzerland; Department of Neurology, University Hospital of Basel, University of Basel, Basel, Switzerland.
4 Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam 1016RV, Netherlands; Department of Radiology, Haaglanden Medical Center, The Hague, Netherlands.
5 Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam 1016RV, Netherlands. Electronic address: [email protected].