Sameer A Ansari

About

Sameer A Ansari is the Chief of Neurointerventional Radiology in the Department of Radiology at Northwestern University Feinberg School of Medicine. He holds the position of Professor in Radiology, specializing in Interventional Neuroradiology. His professional focus includes neurointerventional procedures within the broader field of radiology, contributing to the department's expertise in neurological imaging and minimally invasive treatment techniques.

Research topics

• Medicine
• Internal medicine
• Surgery
• Computer Science
• Engineering
• Emergency medicine
• Cardiology
• Radiology
• Intensive care medicine
• Physical therapy

Selected publications

• Thrombectomy for Stroke With Large Infarct on Noncontrast CT

  JAMA · 2024 · 111 citations

  Importance: Recent large infarct thrombectomy trials used heterogeneous imaging modalities and time windows for patient selection. Noncontrast computed tomographic (CT) scan is the most common stroke imaging approach. It remains uncertain whether thrombectomy is effective for patients with large infarcts identified using noncontrast CT alone within 24 hours of stroke onset. Objective: To evaluate the effect of thrombectomy in patients with a large infarct on a noncontrast CT scan within 24 hours…

  DOI

• Society of NeuroInterventional Surgery recommendations for the care of emergent neurointerventional patients in the setting of COVID-19

  Journal of NeuroInterventional Surgery · 2020 · 102 citations

  The global pandemic of coronavirus disease 2019 (COVID-19), caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), represents an unprecedented challenge to our healthcare system.1 As the number of identified COVID-19 patients exponentially increases, protocols for the safe delivery of care of both patients and providers are vital. This is especially true, given the number of healthcare providers who have contracted the disease. If we fail to protect physicians, nursing…

  DOI

• Follow-up neutrophil-lymphocyte ratio after stroke thrombectomy is an independent biomarker of clinical outcome

  Journal of NeuroInterventional Surgery · 2020 · 58 citations

  Senior authorCorresponding

  BACKGROUND: Admission neutrophil-lymphocyte ratio (NLR) is significantly correlated to clinical outcomes in acute ischemic stroke (AIS). We investigated follow-up NLR and temporal changes in NLR after endovascular thrombectomy (EVT) with respect to successful revascularization, clinical outcomes, symptomatic intracranial hemorrhage (sICH) and mortality. METHODS: Retrospective analysis of EVT for anterior circulation emergent LVO was performed with both admission (NLR1) and 3-7 day follow-up NLR…

  DOI

• First Pass Effect in Patients Treated With the Trevo Stent-Retriever: A TRACK Registry Study Analysis

  Frontiers in Neurology · 2020 · 45 citations

  Our study showed that achieving complete recanalization with a single thrombectomy pass using the Trevo device was highly beneficial. The most common clinical factors that are used to determine eligibility for endovascular therapy, such as NIHSS severity, location of occlusion or patient age were not predictive of the ability to achieve FPE.

  DOI

• Analysis of Mechanical Thrombectomy for Acute Ischemic Stroke on Nights and Weekends Versus Weekdays at Comprehensive Stroke Centers

  Journal of Stroke and Cerebrovascular Diseases · 2021 · 18 citations

  Senior authorCorresponding
  DOI

Recent grants

• Risk Assessment of Cerebral Aneurysm Growth with 4D flow MRI

  NIH · $4.2M · 2013–2026

• Predicting Stroke Risk in Intracranial Atherosclerotic Disease with Novel High Resolution,Functional and Molecular MRI Techniques - Resubmission - 1

  NIH · $2.3M · 2020–2025

• High Resolution and Functional MRI Assessment of Intracranial Atherosclerotic Plaque

  NIH · $425k · 2016–2020

Frequent coauthors

• Ali Shaibani

  Lurie Children's Hospital

  280 shared

• Michael C. Hurley

  Northwestern University

  248 shared

• Matthew B. Potts

  Northwestern Memorial Hospital

  186 shared

• Babak S. Jahromi

  Northwestern Medicine

  174 shared

• R Abdalla

  Ain Shams University

  104 shared

• Donald R. Cantrell

  Lurie Children's Hospital

  86 shared

• Pedram Golnari

  Northwestern University

  63 shared

• Pouya Nazari

  Neurological Surgery

  51 shared

Education

• M.D.

  Northwestern University Feinberg School of Medicine

• B.S.

  University of Illinois at Chicago

Similar researchers at Northwestern University

• Joe B Bakerh-32
• Bradley D Allenh-20
• Ryan J Averyh-15