Vladimir Hachinski, CM, MD (University of Toronto), DSc, FRCPC, FRSC, is Professor of Neurology and Epidemiology and Distinguished University Professor at Western University, Canada. He has transformed the understanding, diagnosis, treatment and prevention of the two greatest threats to the brain: stroke and dementia. He introduced a clinical diagnostic tool, the Hachinski Ischemic Score for identifying the treatable components of dementia. He founded, with John W. Norris, the world’s first successful acute stroke unit, now the standard of care. He was Editor-in-Chief of Stroke, the leading publication in the field. He has published 18 books and over 800 frequently-cited scientific articles. He was the President of the World Federation of Neurology. In 2017 he received the Prince Mahidol Award in Public Health and in 2018 was inducted in the Canadian Medical Hall of Fame.