Sameer A Ansari MD PhD

PubMed

• ASL 4D MRA Intracranial Vessel Segmentation With Deep Learning U-Nets.
  Sang Hun Chung, Zihan Wang, Tianrui Zhao, Zhitao Li, Chase S Krumpelman
  Magnetic Resonance in Medicine. 2025-11-09
• Fluoroscopic guided percutaneous sacroplasty utilizing a single curved needle: technical notes.
  Teymour Sadrieh, Anas S Al-Smadi, Ali Shaibani, Ramez N Abdalla, Sameer A Ansari
  Clinical Imaging. 2025-11-01
• Single-View Fluoroscopic X-Ray Pose Estimation: A Comparison of Alternative Loss Functions and Volumetric Scene Representations.
  Chaochao Zhou, Syed Hasib Akhter Faruqui, Dayeong An, Abhinav Patel, Ramez N Abdalla
  Journal of Imaging Informatics in Medicine. 2025-10-01

Journal Articles

• MACRA 20: are you ready for MIPS?  
  Hirsch JA, Rosenkrantz AB, Ansari SA, Manchikanti L, Nicola GN, J Neurointerv Surg, 1/24/2016
• Guidelines and parameters: percutaneous sclerotherapy for the treatment of head and neck venous and lymphatic malformations  
  Heit JJ, Do HM, Prestigiacomo CJ, Delgado-Almandoz JA, English J, Gandhi CD, Albequerque FC, Narayanan S, Blackham KA, Abruzzo T, Albani B, Fraser JF, Heck DV, Hussain..., J Neurointerv Surg, 1/22/2016
• Multicenter assessment of morbidity associated with cerebral arteriovenous malformation hemorrhages  
  Fukuda K, Majumdar M, Masoud H, Nguyen T, Honarmand A, Shaibani A, Ansari SA, Tan LA, Chen M, J Neurointerv Surg, 1/22/2016
• Training Guidelines for Endovascular Ischemic Stroke Intervention: An International Multi-Society Consensus Document  
  Lavine SD, Cockroft K, Hoh B, Bambakidis N, Khalessi AA, Woo H, Riina H, Siddiqui A, Hirsch JA, Chong W, Rice H, Wenderoth J, Mitchell P, Coulthard A, Signh TJ, Phator..., AJNR Am J Neuroradiol, 1/18/2016
• Subjective and objective evaluation of image quality in biplane cerebral digital subtraction angiography following significant acquisition dose reduction in a clinical...  
  Honarmand AR, Shaibani A, Pashaee T, Syed FH, Hurley MC, Sammet CL, Potts MB, Jahromi BS, Ansari SA, J Neurointerv Surg, 1/6/2016
• Age-Related Changes of Normal Cerebral and Cardiac Blood Flow in Children and Adults Aged 7 Months to 61 Years  
  Wu C, Honarmand AR, Schnell S, Kuhn R, Schoeneman SE, Ansari SA, Carr J, Markl M, Shaibani A, J Am Heart Assoc, 1/4/2016
• Basilar Perforator Aneurysm Communicating with Pseudoaneurysm Cavity  
  Daruwalla V, Syed FH, Elmokadem AH, Hurley MC, Shaibani A, Ansari SA, Interv Neuroradiol, 1/2/2016
• Familial incidence of the congenital torcular dural arteriovenous shunt: Case report and review of the literature  
  Honarmand AR, Hurley MC, Ansari SA, Alden TD, Kuhn R, Syed FH, Shaibani A, Clin Neurol Neurosurg, 1/1/2016
• Focal stenosis of the sigmoid sinus causing intracranial venous hypertension: Case report, endovascular management, and review of the literature  
  Honarmand AR, Hurley MC, Ansari SA, Alden TD, Kuhn R, Shaibani A, Interv Neuroradiol, 1/1/2016
• Neurointerventional management of carotid webs associated with recurrent and acute cerebral ischemic syndromes  
  Elmokadem AH, Ansari SA, Sangha R, Prabhakaran S, Shaibani A, Hurley MC, Interv Neuroradiol, 1/1/2016
• Rare Neurovascular Variants Arising from the Internal Carotid Artery  
  Gajjar M, Honarmand AR, Patel BM, Hurley MC, Shaibani A, Ansari SA, Neurographics, 1/1/2016
• Four-dimensional MRI flow examinations in cerebral and extracerebral vessels-ready for clinical routine?  
  Schnell S, Wu C, Ansari SA, Curr Opin Neurol, 1/1/2016
• Initial hospital management of patients with emergent large vessel occlusion (ELVO): report of the standards and guidelines committee of the Society of NeuroInterventi...  
  McTaggart RA, Ansari SA, Goyal M, Abruzzo TA, Albani B, Arthur AJ, Alexander MJ, Albuquerque FC, Baxter B, Bulsara KR, Chen M, Almandoz JE, Fraser JF, Frei D, Gandhi C..., J Neurointerv Surg, 1/31/2015
• Standard and Guidelines: Intracranial Dural Arteriovenous Shunts  
  Lee SK, Hetts SW, Halbach V, terBrugge K, Ansari SA, Albani B, Abruzzo T, Arthur A, Alexander MJ, Albuquerque FC, Baxter B, Bulsara KR, Chen M, Delgado Almandoz JE, Fr..., J Neurointerv Surg, 1/27/2015
• Automated Analysis of Cerebral Magnetic Resonance Perfusion Maps using Anatomical Vascular Territory Regions of Interest  
  Chattergee N, Ansari SA, Vakil P, Carroll TJ, Hurley MC, Magn Reson Imaging, 1/17/2015
• Combined DSA and 4D Flow Demonstrate Overt Alterations of Vascular Geometry and Hemodynamics in an Unusually Complex Cerebral AVM  
  Wu C, Schnell S, Markl M, Ansari SA, Clin Neuroradiol, 1/16/2015
• Embolectomy for stroke with emergent large vessel occlusion (ELVO): report of the Standards and Guidelines Committee of the Society of NeuroInterventional Surgery  
  Jayaraman MV, Hussain MS, Abruzzo T, Albani B, Albuquerque FC, Alexander MJ, Ansari SA, Arthur AS, Baxter B, Bulsara KR, Chen M, Delgado-Almandoz JA, Fraser JF, Heck D..., J Neurointerv Surg, 1/12/2015
• Cement extravasation into the C7-T1 neural foramen after C7 vertebroplasty  
  Scheer JK, Ansari SA, Dahdaleh NS, Smith ZA, Spine J, 1/1/2015
• Efficacy and Safety of Novel Oral Anticoagulants in Patients with Cervical Artery Dissections  
  Caprio FZ, Bernstein RA, Alberts MJ, Curran Y, Bergman D, Korutz AW, Syed F, Ansari SA, Prabhakaran S, Cerebrovasc Dis, 1/13/2014
• The Role of Antiplatelet Therapy in Aneurysm Coiling  
  Rahme RJ, Zammar S, Ahmadieh TY, El Tekle N, Ansari SA, Bendok BR, Neurological Research, 1/1/2014
• Is Cerebral Aneurysm Screening in Patients with Autosomal Dominant Polycystic Kidney Disease Worthwhile in 2012?  
  Rozenfeld M, Ansari SA, Russell E, Shaibani A, Hurley MC, AJNR Am J Neuroradiol, 1/1/2014
• High-Grade Dural Arteriovenous Fistula Causing Subarachnoid Hemorrhage with Direct Visualization of the Rupture Site on CT Angiography  
  Daruwalla, VJ, Patel BM, Bendok BR, Ansari SA, Shaibani A, Hurley MC, Clinical Neurology and Neurosurgery, 1/1/2014
• Ruptured Spinal Artery Aneurysm Associated With Coarctation of the Aorta: Case Report and Literature Review  
  Aoun SG, Soltanolkotabi M, Ansari SA, Marden FA, Batjer HH, Bendok BR, World Neurosurg, 1/1/2014
• Intra-Arterial Treatment of Acute Ischemic Stroke: The Continued Evolution  
  Lu AY, Ansari SA, Nystrom KV, Damisah EC, Amin HP, Matouk CC, Pashankar RD, Bulsara KR, Current Treatment Options in Cardiovascular Medicine, 1/1/2014
• Intracranial 4D Flow MRI: Towards Individualized Assessment of AVM Hemodynamics and Treatment Induced Changes  
  Ansari SA, Schnell S, Carroll TJ, Vakil P, Hurley MC, Carr J, Bendok BR, Batjer H, Markl M, AJNR Am J Neuroradiol, 1/1/2013
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Books/Book Chapters

• Current Vascular Surgery: Northwestern Vascular Symposium 
  Chapter: Spontaneous Re-Canalization of Occluded Extra-Cranial Internal Carotid Lesions. 
  Golnari P, Potts MB, Hurley MC, Shaibani A, Ansari SA, Jahromi BSEditors: Eskandari MK, Pearce WH, Yao JST.PMPH-USA, Raleigh2016
• Current Vascular Surgery 
  Chapter: Vertebral Artery Stenting 
  Patel BM and Ansari SAEditors: Eskandari MK, Pearce WH, Yao JST.PMPH-USA2013
• Tumors of the Central Nervous System 
  Chapter: Cerebral Cavernous Malformations: Advanced Magnetic Resonance Imaging. 
  Page 143 - 154Shenkar R, Ansari SA, Awad IEditors: M.A. Hayat.Springer, Netherlands2011
• Neurosurgery Knowledge Update 
  Chapter: Spinal Vascular Anatomy and Clinical Correlation 
  Hurley MC, Rozenfeld M, Ansari SA, Russell EEditors: Drs. Harbaugh, et al.
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Abstracts/Posters

• MR Plaque imaging in intracranial atherosclerotic disease.
  Sangha R, El-Mokadem A, Syed F, Carroll TJ, Shaibani A, Hurley MC, Ruff I, Prabhakaran S, Ansari SA, International Stroke Conference (ISC), Los Angeles, CA, 1/1/2016
• Intracranial Atherosclerotic plaque enhancement; is it a predictive marker of ischemic stroke?
  Elmokadem AH, Sherazi F, Honarmand AR, Carroll TJ, Hurley MC, Shaibani A, Ansari SA, European Congress of Radiology (ECR), Vienna, Austria, 1/1/2016
• Diagnostic accuracy of 3D black blood MR imaging with high resolution T1 SPACE in the evaluation of intracranial arterial thrombosis.
  Elmokadem AH, Carroll TJ, Hurley MC, Shaibani A, Ansari SA, European Congress of Radiology (ECR), Vienna, Austria, 1/1/2016
• Utility of intra-arterial cone beam CT angiography in detection of intracranial micro-arteriovenous malformations.
  Elmokadem AH, Honarmand AR, Shaibani A, Hurley MC, Ansari SA, European Congress of Radiology (ECR), Vienna, Austria, 1/1/2016
• Neurointerventional management of carotid webs associated with recurrent and acute cerebral ischemic syndromes.
  Elmokadem AH, Ansari SA, Prabhakaran S, Shaibani A, Hurley MC, European Congress of Radiology (ECR), Vienna, Austria, 1/1/2016
• Quantifying Intracranial Plaque Permeability with Dynamic Contrast Enhanced MRI: A Pilot Study.
  Vakil P, Elmokadem AH, Sherazi F, Cantrell CG, Carroll, TJ, Ansari SA, European Congress of Radiology (ECR), Vienna, Austria, 1/1/2016
• Transient Oxygen Extraction Fraction as a Measure of Cerebrovascular Reserve.
  Cantrell CG, Vakil P, Cantrell D, Jeong Y, Ansari SA, Carroll TJ, International Society for Magnetic Resonance in Medicine (ISMRM), Singapore, 1/1/2016
• Fast and full coverage dual-venc 4D flow MRI: can time-averaged acquisition be useful?
  Aristova M, Markl M, Ansari SA, Carr J, Wu C, Schnell S, International Society for Magnetic Resonance in Medicine (ISMRM), Singapore, 1/1/2016
• Diffusion Corrected Aneurysm Wall Permeability as a Measure of Rupture Risk.
  Cantrell CG, Vakil P, Ansari SA, Carroll TJ, International Society for Magnetic Resonance in Medicine (ISMRM), Singapore, 1/1/2016
• Iterative Progressive Length Conjugate Gradient Reconstruction in MR-PARSE.
  Cantrell CG, Vakil P, Cantrell D, Jeong Y, Ansari SA, Carroll TJ, International Society for Magnetic Resonance in Medicine (ISMRM), Singapore, 1/1/2016
• Endovascular Management of Intracranial Arteriovenous Malformations with Various Angioarchitecture Features in the Pediatric Population: Is Spetzler-Martin Grading Pre...
  Honarmand AR, Ansari SA, Hurley MC, Potts MB, Jahromi BS, Shaibani A, American Society of Neuroradiology (ASNR), Washington, DC, 1/1/2016
• Recanalization and Outcome Comparisons in Acute Ischemic Stroke Patients Treated with Mechanical Thrombectomy Selected by CT/MR Perfusion Imaging Versus CT Angiography.
  Honarmand AR, Shaibani A, Hurley MC, Potts MB, Jahromi BS, Ansari SA, American Society of Neuroradiology (ASNR), Washington, DC, 1/1/2016
• Quantifying Intracranial Plaque Permeability with Dynamic Contrast Enhanced MRI.
  Vakil P, Elmokadem AH, Sherazi F, Cantrell CG, Carroll TJ, Ansari SA, American Society of Neuroradiology (ASNR), Washington, DC, 1/1/2016
• Endovascular Management of Intracranial Arteriovenous Malformations with Various Angioarchitecture Features in the Pediatric Population: Is Spetzler-Martin Grading Pre...
  Honarmand AR, Ansari SA, Hurley MC, Potts MB, Jahromi BS, Shaibani A, Society of Neurointerventional Surgery (SNIS), Boston, MA, 1/1/2016
• Recanalization and Outcome Comparisons in Acute Ischemic Stroke Patients Treated with Mechanical Thrombectomy Selected by CT/MR Perfusion Imaging Versus CT Angiography.
  Honarmand AR, Shaibani A, Hurley MC, Potts MB, Jahromi BS, Ansari SA, Society of Neurointerventional Surgery (SNIS), Boston, MA, 1/1/2016
• Emergent Endovascular Management of Long-Segment and Flow Limiting Carotid Artery Dissections in Acute Ischemic Stroke Intervention with Multiple Tandem Stents.
  Ansari SA, Kuhn AL, Honarmand AR, Khan M, Potts MB, Jahromi BS, Hurley MC, Shaibani A, Gounis MJ, Wakhloo AK, Puri AS, Society of Neurointerventional Surgery (SNIS), Boston, MA, 1/1/2016
• An atherosclerotic plaque phantom for medical imaging.
  Chueh J, Turan TN, van der Marel K, LeMatty T, Brown TR, Ansari SA, Carroll TJ, Buck AK, Zhou J, Chatterjee R, King R, Zheng S, Swartz R, Feldmann E, Gounis MJ, Society of Neurointerventional Surgery (SNIS), Boston, MA, 1/1/2016
• k-t GRAPPA dual-venc 4D flow MRI applied in the brain, thorax and abdomen
  Schnell, S, Ma LE, Wu C, Flores JG, Rose, MJ, Keller EJ, Rigsby, CK, Shaibani A, Ansari SA, Collins, J, Markl M, International Society for Magnetic Resonance in Medicine (ISMRM) Workshop on Quantitative MR Flow: Innovation & Implementation for Clinical & Physiological Insights, San Francisco, CA, 1/1/2016
• Recurrent Stroke Risk In Patients With Icad Treated With Aggressive Medical Management: A Comparison With The Sammpris Trial.
  Sangha RS, Corado C, Bernstein RB, Ruff I, Curran Y, Ansari SA, Prabhakaran S, International Stroke Conference (ISC), Nashville, TN, 1/1/2015
• In-vivo Assessment of the Impact of Regional Intracranial Atherosclerotic Lesions on Brain Arterial 3D Hemodynamics
  Wu C, Carroll TJ, Vakil P, Honarmand AR, Ansari SA, Markl M, Prabhakaran S, International Stroke Conference (ISC), Nashville, TN, 1/1/2015
• FLAIR vessel hyperintensity in TIA/minor stroke.
  Coleman E, Corado C, Bergman, D, Bernstein RB, Ruff I, Curran Y, Ansari SA, Prabhakaran S, International Stroke Conference (ISC), Nashville, TN, 1/1/2015
• Subjective and Objective Evaluation of Image Quality in Biplane Cerebral Digital Subtraction Angiography Following Significant Acquisition Dose Reduction in Clinical S...
  Honarmand AR, Syed FH, Shaibani A, Entezari P, Hurley MC, Ansari SA, Association of University Radiologists (AUR), New Orleans LA, 1/1/2015
• Correlation of Baseline CT ASPECTS with Admission Neutrophil-Lymphocyte Ratio in ICA/MCA Acute Ischemic Stroke.
  Honarmand AR, Shaibani A, Syed FH, Hurley MC, Prabhakaran S, Ansari SA, American Society of Neuroradiology (ASNR), Chicago, IL, 1/1/2015
• Intracranial Venous Hypertension Due to Severe Focal Web-Like Stenosis of the Sigmoid Sinus Associated with Contralateral Sinus Hypoplasia: A New Diagnostic Entity?
  Honarmand AR, Schoeneman S, Syed FH, Ansari SA, Hurley MC, Curran Y, Shaibani A, American Society of Neuroradiology (ASNR), Chicago, IL, 1/1/2015
• Intracranial 4D Flow Imaging for the Quantification of Age-Dependent Cerebral Arterial Inflow in Children from 7 Months to 18 Years.
  Wu C, Schoeneman S, Kuhn R, Honarmand AR, Schnell S, Ansari SA, Markl M, Shaibani A, American Society of Neuroradiology (ASNR), Chicago, IL, 1/1/2015
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Lectures

• Carotid Cavernous Fistula Case Presentation. 
  Chicago, IL - 1/29/2016
• Transition to Value Based Care: ACA and MACRA. 
  Boston, MA - 1/27/2016
• Management of Traumatic Dissections of the Great Vessels of the Neck: Current Level of Evidence. 
  Washington, DC - 1/25/2016
• MR Angiography: Intracranial Stenosis, Aneurysms, and Arteriovenous Malformations. 
  Chicago, IL - 1/20/2016
• Acute Stenting in Tandem Occlusions 
  New York, NY - 1/17/2016
• SNIS-Promoting Quality in Patient Care: Neurovascular Quality Initiative. 
  Las Vegas, NV - 1/15/2016
• Endovascular Stroke Intervention Trials and Acute Post-Stroke Management. 
  Edward Hospital, Naperville, IL - 1/15/2016
• Clinical Research in Your Practice. 
  Los Angeles, CA - 1/15/2016
• NeuroVascular Quality Initiative 
  Winfield, IL - 1/12/2016
• High Resolution MRI in the Evaluation of Intracranial Atherosclerotic Disease. 
  Beijing, China - 1/5/2016
• High Resolution and Functional MRI in the Evaluation of Intracranial Atherosclerotic Disease. 
  Providence, RI - 1/4/2016
• Neurovascular Board Review Case Presentation. 
  Providence, RI - 1/4/2016
• Treated Metastatic Spinal Tumors with Targeted RF Ablation: STARRT Clinical Study. 
  Chicago, IL - 1/3/2016
• Dural Venous Sinus Thrombosis: Diagnostic Imaging, Pitfalls and Mimics. 
  Chicago, IL - 1/29/2015
• Interventional Management of Cerebral Vasospasm. 
  San Francisco, CA - 1/28/2015
• Randomized Trials in Endovascular Stroke Intervention: The New Standard of Care. 
  Shanghai, China - 1/18/2015
• Acute Stroke Imaging. 
  Chicago, IL - 1/13/2015
• Endovascular Stroke Intervention: Standard of Care and Future Directions. 
  Chicago, IL - 1/6/2015
• CT Versus MR Imaging Based Patient Selection for Acute Stroke Intervention. 
  Chicago, IL - 1/14/2014
• MR Imaging Based Patient Selection for Acute Stroke Intervention?: Patient, Reperfusion, Time, AND Tissue. 
  Cerebrovascular Center, Neurological Institute, Cleveland Clinic, Cleveland, OH - 1/11/2014
• MR Imaging Based Patient Selection for Acute Stroke Intervention: Patient, Reperfusion, Time, AND Tissue. 
  San Diego, CA - 1/10/2014
• Stroke Summit 2014: Excellence in Patient Care. 
  Chicago, IL - 1/7/2014
• Benign and Devastating Complications of Cerebral Hyperperfusion Syndrome Post-Carotid Stenting. 
  Jackson Hole, WY - 1/29/2013
• 37th Annual Northwestern Vascular Symposium 
  Northwestern University Feinberg School of Medicine, Chicago, Illinois - 12/6/2012
• Acute Stroke Imaging and Intervention: Time and Tissue. 
  Chicago, IL - 1/26/2012
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Other

• Dynamic contrast enhanced MRI. 
  Ansari SA, Vakil P, Bendok BR, Carroll, TJ, AANS/CNS Joint Cerebrovascular Section Newsletter
  1/1/2015
• HIV-1 Tat mediated transcription through TAR RNA: Role of YB-1 and cell cycle regulated NF-kB in glial cells. 
  Ansari SA, Dissertation, Thomas Jefferson University, College of Graduate Studies
  Philadelphia, PA - 1/1/1998
• Ataxia-Telangiectasia. 
  Ansari SA, Preliminary Dissertation, Thomas Jefferson University, College of Graduate Studies
  Philadelphia, PA - 1/1/1995