From the Institut und Poliklinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum Carl Gustav Carus, Dresden, Germany (R.v.K.); Departments of Neurology and Rehabilitation Medicine and Radiology, University of Cincinnati, OH (J.P.B.); Department of Medicine and Neurology, Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia (B.C.V.C.); Department of Radiology and Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada (A.D., M.G., M.D.H.); Department of Radiology (K.M.T., C.B.L.M.M.) and Department of Biomedical Engineering and Physics, Academic Medical Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands (H.A.M.); Department of Neurology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (M.V.M.); Department of Radiology, Hospital Clínic, Barcelona, Spain (L.S.R.); Department of Neurology and Comprehensive Stroke Center, David Geffen School of Medicine; Los Angeles, CA (J.L.S.); Department of Neurology, Helsinki University Central Hospital and Department of Neurological Sciences, University of Helsinki, Helsinki, Finland (D.S.); University of Edinburgh, Edinburgh, United Kingdom (W.W.); and Department of Neurology, University of Heidelberg, Heidelberg, Germany (W.H.). firstname.lastname@example.org.