Buchan, Prof. Alastair Mitchell, (born 16 Oct. 1955), Professor in Stroke Medicine, since 2009, Dean of Medicine and Head, Medical Sciences Division, since 2008, Director, Acute Vascular Imaging Centre (formerly Unit), since 2006, and Hon. Consultant Neurologist, since 2004, University of Oxford; Professorial Fellow of Corpus Christi College, Oxford, since 2009; Senior Investigator, National Institute for Health Research, since 2008