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Ronit Agid

Dr. Ronit Agid

Dr. Ronit Agid is a Neuroradiologist at the Toronto Western Hospital, University Health Network. She is an associate Professor of Radiology at the University of Toronto. In 1995 she graduated from the Hadassah Hebrew University medical school in Jerusalem, Israel. She completed her residency in radiology at the Hadassah medical center in Jerusalem. Her fellowship training in diagnostic and interventional Neuroradiology was at the University of Toronto in 2001-2004 under the tutelage of Dr. Karel terBrugge.

Dr. Agid has published over 100 articles in peer-reviewed journals and presented her work in over 70 scientific meetings. In addition, she has been an invited speaker and a visiting professor in over 60 national and international conferences. She has organized 3 scientific meetings in Tel Aviv focusing on Neuro-Interventional treatments and served as a faculty and session moderator in 30 other scientific meetings. She serves as a reviewer for 24 peer reviewed medical journals and is on the editorial board of three. Dr. Agid’s research focus is on the natural history, imaging and management of cerebrovascular diseases.

Currently Dr. Agid serves as the interim section head of Neurointervention in the Joint Department of Medical Imaging at UHN. She is the site supervisor of the U of T diagnostic fellowship program. Dr. Agid is a member of the executive and Endowment Committees of the World Federation of Interventional and Therapeutic Neuororadiology (WFITN) and Chair of the Educational and women’s sections of this organization. She created and is managing the Grant for “Interventional Neuroradiology Low and Lower-Middle Income Country Observership Program” for the WFITN. Dr. Agid serves as a member of the AFC (area of focused competence) Working Group in Neuro-intervention of the Royall College of Physicians and Surgeons of Canada

Recent Publications

  • Gender disparities in industry compensation and research payments among neurointerventional surgeons in the USA

    CONCLUSIONS: Our findings indicate that in the field of interventional neuroradiology, females receive less research funding and private industry […]

  • Thoracolumbar spinal dural arteriovenous fistulae present with longer arteriovenous transit compared to cranial and cervical dural fistulae

    CONCLUSION: Prolonged arteriovenous transit times may represent a distinct feature of thoracolumbar spinal dural arteriovenous fistulaes. This may, […]

  • Motion artifact correction for cone beam CT stroke imaging: a prospective series

    CONCLUSIONS: Our results demonstrate that CBCT motion artifacts are significantly reduced using a novel post-processing algorithm, which improved […]

  • Development of a management protocol for internal carotid artery injury during endoscopic surgery: a modified Delphi method and single-center multidisciplinary working group

    CONCLUSION: Due to the life-threatening nature of ICA injury, it is imperative that endoscopic sinus and skull base surgeons are prepared to manage […]

  • Recognition of the variant type of spinal dural arteriovenous fistula: a rare but important consideration

    CONCLUSIONS: Recognition of the variant type of SDAVF is crucial for management, as correct localization of the fistulous point and bimetameric […]

  • The butterfly effect: improving brain cone-beam CT image artifacts for stroke assessment using a novel dual-axis trajectory

    CONCLUSIONS: Recent developments in CBCT imaging protocols have significantly improved image artifacts, which has improved diagnostic confidence for […]

  • Assessment of Discrepancies Between Follow-up Infarct Volume and 90-Day Outcomes Among Patients With Ischemic Stroke Who Received Endovascular Therapy

    CONCLUSIONS AND RELEVANCE: In this study, discrepancies between functional outcome and post-EVT infarct volume were associated with differences in […]

  • Bing-Neel Syndrome: A Rare Mimic of Secondary Normal Pressure Hydrocephalus

    No abstract

  • Endovascular Device Choice and Tools for Recanalization of Medium Vessel Occlusions: Insights From the MeVO FRONTIERS International Survey

    Background: Endovascular treatment (EVT) for stroke due to medium vessel occlusion (MeVO) can be technically challenging. Devices and tools are […]

  • Feasibility of robot-assisted neuroendovascular procedures

    CONCLUSIONS: This study demonstrates the feasibility of robot-assisted neurointerventional procedures. The authors' results represent an important […]

  • Women in neurointervention, a gender gap? Results of a prospective online survey

    CONCLUSION: There are many potential reasons why women are underrepresented in neurointervention, however, the literature suggests this is not unique […]

  • Risk of Rupture After Intracranial Aneurysm Growth

    CONCLUSION AND RELEVANCE: Within 1 year after growth detection, rupture occurred in approximately 1 of 25 aneurysms. The triple-S risk prediction […]

  • When Two Is Better than One : The Buddy-wire Technique in Flow-diversion Procedures

    CONCLUSION: The buddy-wire is a useful technique in FD procedures to prevent herniation of the microcatheter into the aneurysm sack, in wide-necked […]

  • Embolization strategies for intracranial dural arteriovenous fistulas with an isolated sinus: a single-center experience in 20 patients

    CONCLUSIONS: Isolated sinus DAVFs are always aggressive and require a multimodal approach to guarantee closure of the shunt. Transarterial treatment […]

  • The safety profile and angioarchitectural changes after acute targeted embolization of ruptured arteriovenous malformations

    CONCLUSIONS: This study demonstrates that acute targeted embolization of angiographic weak points, particularly aneurysms, is technically safe and […]

  • Novel flat-panel cone-beam CT compared to multi-detector CT for assessment of acute ischemic stroke: A prospective study

    CONCLUSIONS: Continued advances in cone-beam CT allow marked improvements in image quality for the assessment of brain parenchyma, which supports a […]

  • Radial vs. Femoral Artery Access for Procedural Success in Diagnostic Cerebral Angiography : A Randomized Clinical Trial

    CONCLUSION: Radial artery access is non-inferior to femoral artery access for procedural success in cerebral angiography. A large multicenter trial […]

  • Endovascular Therapy of Acute Ischemic Stroke in Patients with Large-Vessel Occlusion Associated with Active Malignancy

    PURPOSE: There is limited data on the effectiveness of endovascular therapy (EVT) in stroke patients with active malignancy. In this study, we […]

  • Absence of pontine perforators in vertebrobasilar dolichoectasia on ultra-high resolution cone-beam computed tomography

    CONCLUSIONS: The absence of pontine perforators in the fusiform vessel segment of VBDE is counterbalanced by recruitment of collateral flow from […]

  • Endovascular Treatment Versus Best Medical Therapy in Acute Ischemic Stroke Patients with Mild Symptoms

    CONCLUSIONS: Despite the higher number of proximal occlusions in the EVT group, overall outcomes were similar, with >70% of patients in each […]

  • Challenging the Ischemic Core Concept in Acute Ischemic Stroke Imaging

    Endovascular treatment is a highly effective therapy for acute ischemic stroke due to large vessel occlusion and has recently revolutionized stroke […]

  • Thrombectomy for Distal, Medium Vessel Occlusions: A Consensus Statement on Present Knowledge and Promising Directions

    No abstract

  • Efficacy and safety of nerinetide for the treatment of acute ischaemic stroke (ESCAPE-NA1): a multicentre, double-blind, randomised controlled trial

    BACKGROUND: Nerinetide, an eicosapeptide that interferes with post-synaptic density protein 95, is a neuroprotectant that is effective in preclinical […]

  • Cerebrofacial venous metameric syndrome-spectrum of imaging findings

    Cerebrofacial venous metameric syndrome (CVMS) is a complex craniofacial vascular malformation disorder in which patients have a constellation of […]

  • Perioperative covert stroke in patients undergoing non-cardiac surgery (NeuroVISION): a prospective cohort study

    BACKGROUND: In non-surgical settings, covert stroke is more common than overt stroke and is associated with cognitive decline. Although overt stroke […]

  • Flow-diverter Stents for Internal Carotid Artery Reconstruction Following Spontaneous Dissection: A Technical Report

    CONCLUSION: Reconstruction of the ICA as a rescue strategy for extracranial carotid dissection using flow-diverter stents is feasible and was […]

  • Interval angioarchitectural evolution of brain arteriovenous malformations following rupture

    CONCLUSIONS: Angioarchitectural changes can be seen in 40% of ruptured bAVMs between the acute- and delayed-phase DSA. A small nidus, a superficial […]

  • Rationale and design for the detection and neurological impact of cerebrovascular events in non-cardiac surgery patients cohort evaluation (NeuroVISION) study: a prospective international cohort study

    CONCLUSIONS: The NeuroVISION study will characterise the epidemiology of covert stroke and its clinical consequences. This will be the largest and […]

  • Management of Residual Brain Arteriovenous Malformations After Stereotactic Radiosurgery

    CONCLUSIONS: Complete obliteration of a significant number of residual BAVMs may occur 3-5 years after the first irradiation, whereas increased […]

  • Carotid Stenting for Treatment of Symptomatic Carotid Webs: A Single-Center Case Series

    CONCLUSIONS: Stent placement for treatment of carotid webs can be performed safely. Further studies are needed to confirm our findings.

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