Daniel Mandell is a neuroradiologist at the University Health Network in Toronto. He is an expert in cerebrovascular and stroke imaging and consults internationally on brain imaging for challenging cases. Dr. Mandell is the lead author of the American Society of Neuroradiology clinical practice guideline on blood vessel wall imaging. His research on the relationship between micro-strokes and dementia is featured in a public health campaign of the U.S. National Institutes of Health. Dr. Mandell is a Director of the Canadian Society of Neuroradiology and the Canadian representative to the American Society of Neuroradiology.