[Tian, Huiqiao; Parsons, Mark; Lin, Longting; Bivard, Andrew] Univ Newcastle, John Hunter Hosp, Dept Neurol, Callaghan, NSW, Australia; [Aviv, Richard] Univ Toronto, Dept Med Imaging, Sunnybrook Hlth Sci Ctr, Toronto, ON, Canada; [Butcher, Kenneth] Univ Alberta, Div Neurol, Dept Med, Edmonton, AB, Canada; [Lou, Min] Fudan Univ, Huashan Hosp, Dept Neurol, Shanghai, Peoples R China; [Kleinig, Timothy] Royal Adelaide Hosp, Dept Neurol, Adelaide, SA, Australia