Professor Mark Parsons is nationally and internationally recognized as an authority and research leader in acute stroke imaging. Stroke is a disease of global significance both in terms of prevalence, impact and cost. His original research is now translating into clinical practice and policy in the selection of acute stroke patients for reperfusion therapy and has the potential to change the landscape of acute stroke care and benefit many millions of patients across the world. His influence and importance in the field of acute stroke imaging is evidenced by his invitations to speak at every international high profile stroke conference over the past five years. His standing in the international stroke imaging community is evidenced by his membership of the Stroke Imaging Repository Consortium, and his leadership of the NHMRC funded partnership grant for the INternational Stroke Perfusion Imaging Registry (INSPIRE). He is on the executive of the STIR (STroke Imaging Repository) group which is setting the international agenda for stroke imaging research. He has established Newcastle as a global reference centre and a Strategic Research Partner with Toshiba Medical Corporation and is a consultant to one of Australia’s leading imaging analysis software companies, APOLLO Medical Imaging.