Chris heyn

Chris Heyn is a graduate of the MD/PhD program from the University of Toronto

He completed his PhD dissertation as a visiting graduate student in the Department of Medical Biophysics, University of Western Ontario and Imaging Research Laboratories of the Robarts Research Institute in London Ontario.

From 2008-2013 he completed residency training in Diagnostic Radiology from the University of Toronto and is a Fellow of The Royal College of Physicians and Surgeons of Canada. 

In 2010 he was a Visiting Scholar at the Richard M. Lucas Center for Imaging at Stanford University in Palo Alto. 

He is presently chief neuroradiology fellow at the University of Toronto and is a research post-doctoral fellow at the Mouse Imaging Center (MiCE) and Sunnybrook Research Institute. 

​His current research interests are in novel MR techniques for measuring tissue metabolism and blood flow.  


Medical Imaging Applied Physics

University of Toronto Department of Medical Imaging


General Leung

General Leung

Marshall sussman

Marshall Sussman is an Assistant Professor appointment in the Department of Medical Imaging at the University of Toronto, as well as an Associate Researcher appointment at the University Health Network (UHN). 

He received his PhD from the Department of Medical Biophysics at the University of Toronto in the field of MRI.   He has published 34 papers and 76 abstracts, and has 8 patents.  He currently holds four grants.  

Past awards include competing as a finalist (primary author) in the Young Investigator Competition of the International Society of Magnetic Resonance in Medicine, and the winner (as co-author) of the John R. Cameron Young Investigator Award of the American Association of Physicists in Medicine (AAPM). 

Dr. Sussman's research is focused the development and application of novel MRI methods for tissue characterization; interventional MRI; and techniques for motion characterization/correction.



the mri Team

John conklin

John Conklin is a third year resident in Diagnostic Radiology at the University of Toronto.

Prior to medicine, he studied Systems Design Engineering at the University of Waterloo and Medical Biophysics at the University of Western Ontario, where he found his passion for MRI physics and pulse sequence design.

John is also interested in medical education, and hopes to use his early radiology experience to present physics concepts in ways that are relevant to life at the workstation.

John loves to chat about all things MR, so please drop him a line if there is any aspect of the course you would like to discuss in more detail.