Marlise dos Santos
Clinician Investigator, Neuroscience
Ottawa Hospital Research Institute
Neuroscientist, Neurosciences Program
Ottawa Hospital Research Institute
Scientist, Brain and Mind Research Institute
University of Ottawa
Associate Professor of Radiology, Department of Medical Imaging
University of Ottawa
Interventional Neuroradiologist, Department of Medical Imaging
The Ottawa Hospital
Diagnostic Neuroradiologist, Department of Medical Imaging
The Ottawa Hospital
Master of Public Health and Clinical Epidemiology, T.H. Chan School of Public Health
Harvard University
Master of Neurovascular Diseases
University of Paris - XI
Elected Delegate, District-8
Ontario Medical Association
FRCPC, Neuroradiology
Royal College of Physicians and Surgeons of Canada
FRCPC, Clinical Neurology
Royal College of Physicians and Surgeons of Canada
Active Member, CPSO Lincense Number 79928
College of Physicians and Surgeons of Ontario
Research Interests
Patient Safety and Quality Improvement
Patient Engagement
Public Health
Epidemiology
Advanced Techniques in Vessel Wall Imaging
Neurovascular Anatomy
Head and Neck Diseases
Long-term Outcome in the Endovascular Treatment of Vascular Lesions
COVID-19
Brief Biography
Support Dr. Santos' cause: Donate to Radiology Research at The Ottawa Hospital
Dr. Marlise Santos is an Associate Professor in the Department of Radiology at the University of Ottawa and a cross-appointed physician in the Division of Neurosurgery. She brings a decade of specialized neurosciences education to our community, including six years of formal training in endovascular neurosurgery and an International Master’s Diploma in Neurovascular Diseases (2006).
Dr. Santos is a valued member of the neuroradiology and neurointerventional sections at The Ottawa Hospital. As a neuroscientist, she has served as the principal investigator for several scientific studies endorsed by The Ottawa Hospital and the Brain and Mind Research Institutes. She is a tireless advocate for patient safety and excellence in clinical care and education.
Dr. Santos earned a Master of Public Health and Clinical Epidemiology from Harvard University (2018). She has been recognized with several prestigious awards, including the Best Radiology Teacher Award from the University of Ottawa Faculty of Medicine Undergraduate Medical Education Program (2012), The Ottawa Hospital’s Patient Safety Star Award (2014), and the Neuroradiology Staff Teacher of the Year Award (2023).
With two decades of professional experience in neuroimaging and endovascular surgery, Dr. Santos provides individualized and compassionate medical care for patients with complex conditions, including acute stroke (brain clot aspiration), aneurysms, fistulas, vascular malformations (catheter embolization, coiling, stenting, flow diversion, etc.), vessel stenosis (stenting, angioplasty), venous angiomas (sclerotherapy), and vascular tumors (catheter embolization), among others.
Dr. Santos' background in clinical neurology, combined with her expertise in diagnostic neuroradiology, ensures comprehensive patient support, including MRI and CT interpretation. Under her care, patients receive expert guidance and compassionate support, with emphasis on patient involvement in every aspect of their medical journey.
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Dr. Santos is looking forward to assisting you!
Clinical referrals can be sent by your physicians
- by Fax (for all external / outpatients, via Central Intake for Neurosurgery): (613)739-6779 or (613)761-4128.
- by EPIC system - all outpatients or non-TOH inpatients: "Place Ambulatory Orders", "Add order", "Ambulatory referral to Interventional Neuro Radiology" or "Ambulatory Referral to Neurosurgery"
- by EPIC system - for all TOH in-patients: "Place Ambulatory Orders", "Add order", "IP Consult to Neuro Radiology".
Updated February 2025.
Selected Publications
1. Zhu S**, Alam A***, Thornhill R, Tsehmaister-Abitbul V, Stotts G, Pettem H, Aviv R, Agid R, Pikula A, Shiva Shankar JJ, Milot G, Van Adel B, Yip S, Heran M, Fahed R, Settecase F, dos Santos MP. Impact of the COVID-19 pandemic on outcomes of acute ischemic stroke patients treated with endovascular therapy: A multicenter Canadian study. PLoS One. 2025 Feb 10;20(2):e0316734. doi: 10.1371/journal.pone.0316734. PMID: 39928659; PMCID: PMC11809926.
2. Heran MKS, Jackson EKY*, Nersesyan N*, Craig MG***, Fisher CG, dos Santos MP. Long-term effectiveness and feasibility of CT-guided cryoablation as a novel treatment option for symptomatic lumbar synovial cysts. Skeletal Radiol. 2024 Oct 15. doi: 10.1007/s00256-024-04808-y. Epub ahead of print. PMID: 39404855.
3. Fitzpatrick, LA, Berkovitz, N., dos Santos, MP , Majeed, N., Glikstein, R., Chakraborty, S., Stotts, G., Veinot, JP, Berthiaume, A., Chatelain, R.. "Vulnerable Carotid Plaque Imaging and Histopathology Without a Dedicated Receiver Coil". Neuroradiol J. 2017 Apr;30(2):120-128.
4. dos Santos, MP , Sabri, A., Dowlatshahi, D., Bakkai, Ali M., Elallegy, A. "Survival Analysis of Risk Factors for Major Recurrence of Intracranial Aneurysms after Coiling". Canadian Journal of Neurological Sciences. 2015;42:40-47.
5. Ghinda, D., dos Santos, MP , Sabri, A. "Clinical and Angiographic Outcomes of Stent-assisted Coiling of Intracranial Aneurysms". Interventional Neuroradiology. 2015 Apr;21(2):146-54.
6. dos Santos, MP , Sabri, A.*, Dowlatshahi, D., Bakkai, Ali M.*, Elallegy, A.*, Lesiuk, HJ, Lum, C. "Survival Analysis of Risk Factors for Major Recurrence of Intracranial Aneurysms after Coiling." Canadian Journal of Neurological Sciences. 2015;42:40-47.
Diseases, conditions and populations of interest
Research and clinical approaches
