About the Authors

Joanna M. Wardlaw

Joanna.wardlaw@ed.ac.uk

Affiliation SINAPSE Collaboration, Division of Clinical Neurosciences, University of Edinburgh, Edinburgh, United Kingdom

Rüdiger von Kummer

Affiliation Department of Neuroradiology, University Hospital, Technische Universität Dresden, Dresden, Germany

Andrew J. Farrall

Affiliation SINAPSE Collaboration, Division of Clinical Neurosciences, University of Edinburgh, Edinburgh, United Kingdom

Francesca M. Chappell

Affiliation SINAPSE Collaboration, Division of Clinical Neurosciences, University of Edinburgh, Edinburgh, United Kingdom

Michael Hill

Affiliation Stroke Unit, Department of Neurosciences, University of Calgary, Foothills Medical Centre, Calgary, Canada

David Perry

Affiliation SINAPSE Collaboration, Division of Clinical Neurosciences, University of Edinburgh, Edinburgh, United Kingdom

Competing Interests

The salary of JMW was partly funded by the Scottish Funding Council (SFC) and Chief Scientist Office of the Scottish Executive; the salary of AJF was partly funded by Chest Heart Stroke Scotland (RES000/7) and Royal College of Radiologists; Chest, Heart, Stroke Scotland and The Health Foundation (2268/1282) funded the salary of a scan management technician and The Health Foundation also supported the Third International Stroke Trial from which some of the CT scans were obtained. The Stroke Association funded MAST-I from which some of the CT scans were obtained. None of these organisations had any role in the design, conduct, analysis or interpretation of the study data or preparation of the manuscript.

Author Contributions

Conceived and designed the experiments: JMW RvK. Performed the experiments: JMW RvK AJF MH. Analyzed the data: JMW RvK AJF FMC. Contributed reagents/materials/analysis tools: JMW RvK DP. Wrote the paper: JMW RvK AJF FMC MH. Designed scan reading tool, database and other IT related functions: DP.