Tom Marotta


Project Investigator, Keenan Research Centre for Biomedical Science


Please note: Dr. Marotta is not taking any summer students.

Research Interests

Aneurysm diagnosis and surgery, three-dimensional imaging, magnetic resonance angiography, X-ray computed tomography, blood vessel prosthesis, new devices for endovascular repair of aneurysms.


Recent Publications

  1. Dmytriw, AA, Kapadia, A, Enriquez-Marulanda, A, Parra-Fariñas, C, Kühn, AL, Nicholson, PJ et al.. Vertebral artery aneurysms and the risk of cord infarction following spinal artery coverage during flow diversion. J. Neurosurg. 2020; :1-10. doi: 10.3171/2020.1.JNS193293. PubMed PMID:32217800 .
  2. Kumar, A, Dmytriw, AA, Salem, MM, Kuhn, AL, Phan, K, Bharatha, A et al.. Reconstructive vs Deconstructive Endovascular Approach to Intradural Vertebral Artery Aneurysms: A Multicenter Cohort Study. Neurosurgery. 2020; :. doi: 10.1093/neuros/nyaa005. PubMed PMID:32022238 .
  3. Diestro, JDB, Parra-Farinas, C, Zetchi, MA, Spears, J, Marotta, TR. The POP (Pull on Pipe) Maneuver: A Technical Note for Rescuing a Prolapsed Pipeline Device. J Stroke Cerebrovasc Dis. 2020;29 (4):104647. doi: 10.1016/j.jstrokecerebrovasdis.2020.104647. PubMed PMID:32008923 .
  4. Foreman, PM, Salem, MM, Griessenauer, CJ, Dmytriw, AA, Parra-Farinas, C, Nicholson, P et al.. Flow Diversion for Treatment of Partially Thrombosed Aneurysms: A Multicenter Cohort. World Neurosurg. 2020;135 :e164-e173. doi: 10.1016/j.wneu.2019.11.084. PubMed PMID:31760188 .
  5. Diestro, JDB, Spears, J, Marotta, TR. Developmental Venous Anomaly Inside a Glioblastoma. JAMA Neurol. 2019; :. doi: 10.1001/jamaneurol.2019.3840. PubMed PMID:31710346 .
  6. Hoogmoed, J, de Oliveira Manoel, AL, Coert, BA, Marotta, TR, Macdonald, RL, Vandertop, WP et al.. Why Do Patients with Poor-Grade Subarachnoid Hemorrhage Die?. World Neurosurg. 2019;131 :e508-e513. doi: 10.1016/j.wneu.2019.07.221. PubMed PMID:31398522 .
  7. Marotta, TR. Erratum. The second-generation eCLIPs Endovascular Clip System: initial experience. J. Neurosurg. 2018;129 (1):249. doi: 10.3171/2018.4.JNS161731a. PubMed PMID:30444492 .
  8. Murphy, A, Lee, TY, Marotta, TR, Spears, J, Macdonald, RL, Aviv, RI et al.. Prospective Multicenter Study of Changes in MTT after Aneurysmal SAH and Relationship to Delayed Cerebral Ischemia in Patients with Good- and Poor-Grade Admission Status. AJNR Am J Neuroradiol. 2018;39 (11):2027-2033. doi: 10.3174/ajnr.A5844. PubMed PMID:30337436 .
  9. Adeeb, N, Griessenauer, CJ, Dmytriw, AA, Shallwani, H, Gupta, R, Foreman, PM et al.. Risk of Branch Occlusion and Ischemic Complications with the Pipeline Embolization Device in the Treatment of Posterior Circulation Aneurysms. AJNR Am J Neuroradiol. 2018;39 (7):1303-1309. doi: 10.3174/ajnr.A5696. PubMed PMID:29880475 .
  10. Zetchi, MA, Dmytriw, AA, Chiu, AH, Drake, BJ, Alizadeh, NV, Bharatha, A et al.. Entry remnants in flow-diverted aneurysms: Does branch geometry influence aneurysm closure?. Interv Neuroradiol. 2018;24 (6):624-630. doi: 10.1177/1591019918779229. PubMed PMID:29871561 PubMed Central PMC6259341.
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Affiliations & Other Activities

  • Interventional Neuroradiologist, Department of Medical Imaging, St. Michael’s Hospital