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About Sickkids
About SickKids

Elysa Widjaja, MD, MPH

The Hospital for Sick Children
Diagnostic Imaging

Research Institute
Associate Scientist
Neurosciences & Mental Health

University of Toronto
Associate Professor
Medical Imaging

Phone: 416-813-7654
Email: elysa.widjaja@sickkids.ca
Alternate Contact: Cindy Sawyer
Alternate Phone: 416-813-6888
Alternate Email: cindy.sawyer@sickkids.ca

Brief Biography

Dr. Widjaja is a staff paediatric neuroradiologist within the Department of Diagnostic Imaging and an Associate Scientist in Neurosciences & Mental Health at The Hospital for Sick Children. She is an Associate Professor at the University of Toronto in Medical Imaging.

Clinical Activities
Dr. Widjaja specializes in brain imaging in children, particularly in epilepsy imaging.  

Research Interests

Dr. Widjaja’s research program focuses on:

(i) better understanding of how epilepsy affects children’s brain,
(ii) outcomes of epilepsy surgery in children, and
(iii) health-care resource use in children with epilepsy.   


  • Puka K, Smith ML, Moineddin R, Snead OC, Widjaja E. The influence of socio-economic status on health resource utilization in pediatric epilepsy in a universal health insurance system. Epilepsia 2016, in press
  • Rubinger L, Chan C, Andrade D, Go C, Smith ML, Snead OC, Rutka JT, Widjaja E. Socioeconomic status influenced time to surgery and surgical outcome in pediatric epilepsy surgery. Epilepsy & Behavior 2016 Jan 13;55:133-138
  • Luc Rubinger, Carol Chan, Felice D’Arco, Rahim Moineddin, Osama Muthaffar, James T. Rutka, O. Carter Snead, Mary Lou Smith, Elysa Widjaja. Change in presurgical diagnostic imaging evaluation affects subsequent pediatric epilepsy surgery outcome. Epilepsia 2016 Jan;57(1):32-40
  • Widjaja E, Zamyadi M, Raybaud C, Snead OC, Doesburg SM, Smith ML. Disrupted global and regional structural networks and subnetworks in children with localization-related epilepsy. AJNR Am J Neuroradiol. 2015 Jul;36(7):1362-8.  
  • Alshafai L, Ochi A, Go C, McCoy B, Hawkins C, Otsubo H, Snead OC, Rutka J, Widjaja E. Clinical, EEG, MRI, MEG, and surgical outcomes of pediatric epilepsy with astrocytic inclusions versus focal cortical dysplasia. Epilepsia 2014;55(10):1568-75
  • Widjaja E, Zamyadi M, Raybaud C, Snead OC, Smith ML. Volumetric changes in hippocampal subregions and their relation to memory in pediatric non-lesional localization-related epilepsy. Epilepsia 2014; Apr;55(4):519-27
  • Widjaja E, Zamyadi M, Raybaud C, Snead OC, Smith ML. Abnormal functional network connectivity among spatially independent resting state networks in children with frontal lobe epilepsy. AJNR Am J Neuroradiol. 2013 Dec;34(12):2386-92
  • Widjaja E, Smith ML, Jette N, Payne E. Patient and hospital characteristics are associated with cost of hospitalizations in children with epilepsy. Epilepsy and Behavior 2013;28(3):335-42
  • Widjaja E, Skocic J, Go C, Snead OC, Mabbott D, Smith ML. Abnormal white matter correlates with neuropsychological impairment in children with localization-related epilepsy. Epilepsia 2013;54(6):1065-73
  • Widjaja E, Shammas A, Vali R, Otsubo H, Ochi A, Snead OC, Go C, Charron M. FDG-PET and magnetoencephalography in presurgical work-up of children with localization-related non-lesional epilepsy. Epilepsia 2013;54(4):691-9.
  • Widjaja E, Li B, Medina LS. Diagnostic Evaluation in Patients with Intractable Epilepsy and normal MRI: a Decision Analysis and Cost-Effectiveness Study. AJNR 2013;34(5):1004-9.
  • Widjaja E, Zamyadi M, Raybaud C, Snead OC, Smith ML. Impaired default mode network on resting state fMRI in children with medically-refractory epilepsy. AJNR 2013 Mar;34(3):552-7.
  • Widjaja E, Li B, Schinkel CD, Ritchie LP, Weaver J, Snead OC, Rutka JT, Coyte PC. Cost-effectiveness of pediatric epilepsy surgery compared to medical treatment in children with intractable epilepsy. Epilepsy Research 2011;94(1-2):61-8