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Darryl B. Sneag, MD

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About Dr. Sneag

Director of Peripheral Nerve, MRI

Dr. Sneag completed his undergraduate studies magna cum laude from Brown University, with concentrations in Old World Archaeology & Art and Biology (honors), and was accepted into the Phi Beta Kappa Honors Society. During medical school, Albert Einstein sponsored him to conduct a Global Health Research Fellowship in pediatric HIV/TB at the Red Cross Children's Hospital in Cape Town, South Africa.

Upon returning from South Africa, he was an MRI Research Assistant with Dr. Hollis Potter at HSS, during which he helped validate a semi-automated software program for physeal segmentation. He received a Special Diploma in Radiology and was accepted into the Alpha Omega Alpha Honors Society while at Einstein. He then completed his residency at Brigham and Women's Hospital in Boston and returned as a musculoskeletal MRI fellow at HSS, where he received the fellowship research award.

Dr. Sneag's major clinical and research interests are sports, spine and peripheral nerve MRI and he has published and lectured on a variety of topics. He has specific interest in both qualitative, high-resolution vascular suppression techniques for peripheral nerve visualization as well as quantitative techniques, such as diffusion tensor imaging, to assess nerve regeneration. Dr. Sneag works closely with physicians at the HSS Center for Brachial Plexus and Traumatic Nerve Injury to help guide operative and non-operative management and receives NIH funding to study Parsonage-Turner syndrome (neuralgic amyotrophy).

Profile Video


Specialized Centers

Center for Brachial Plexus and Traumatic Nerve Injury

Special Expertise

Peripheral Nerve MRI
Spine MRI
Sports Medicine

Patient Stories


If your insurance is not listed, please call our office if you have questions regarding your insurance coverage. If you have out-of-network benefits, then your insurance may reimburse you for a portion of your office visit. We will work with you and your insurance to minimize your out-of-pocket costs. Financial assistance may be available for patients in need.



Director of Peripheral Nerve, MRI, Hospital for Special Surgery
Associate Attending Radiologist, Hospital for Special Surgery
Clinical Scientist, MRI Laboratory, Hospital for Special Surgery
Associate Professor of Radiology, Weill Cornell Medical College


American Association of Neuromuscular & Electrodiagnostic Medicine
American College of Radiology
American Roentgen Ray Society
International Society for Magnetic Resonance in Imaging
Medical Society of the State of New York
New York Roentgen Ray Society
North American Spine Society
Orthopedic Research Society
Radiologic Society of North America


American Board of Radiology, 2013


President’s Research Initiative Award for “Parsonage-Turner is not a Brachial Plexitis” at Annual Meeting of the American Association of Neuromuscular and Electrodiagnostic Medicine, 2017
1st Prize for “Success of Scaphoid Nonunion is Independent of Proximal Pole Vascularity”, Annual Resident and Fellows Night, New York Society for Surgery of the Hand, 2017
Charles Christian Award for Excellence in Musculoskeletal Research for “Brachial Plexitis or Neuritis? MRI Features of Lesion Distribution in Parsonage-Turner Syndrome” at HSS Clinical Fellow Research Day, 2017
Musculoskeletal Imaging Fellowship Research Award, 2014
Alpha Omega Alpha (AOA), 2008
Edward Weinstein Memorial Award for graduate displaying outstanding scholarship and human commitment, 2008
Phi Beta Kappa & Sigma Xi, 2003
Dewart Award for outstanding senior entering medical school who has developed deep interests in non-science discipline and demonstrated sincere humanitarian concern through extracurricular activities and service, 2003
Arnold Bennet Class of 1872 Award for outstanding fieldwork and academic excellence in archaeology, 2003


MD, Albert Einstein College of Medicine at Yeshiva University, New York, NY, 2008
Internship: Preliminary Medicine, St. Luke’s Roosevelt Hospital Center, Columbia University, New York, NY, 2009
Residency: Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 2013
Fellowship: Musculoskeletal MRI, Hospital for Special Surgery, New York, NY, 2014

State Licensure



Publications by Dr. Sneag

Professional Education

Selected Journal Articles

Krishnan KR, Wolfe SW, Feinberg JH, Nwawka OK, Sneag DB. Imaging and Treatment of Phrenic Nerve Hourglass-Like Constrictions in Neuralgic Amyotrophy. Krishnan KR, Wolfe SW, Feinberg JH, Nwawka OK, Sneag DB. Muscle Nerve. 2020 Aug 25.

Krishnan KR, Sneag DB, Feinberg JH, Nwawka OK, Lee SK, Arányi Z, Wolfe SW. Outcomes of Microneurolysis of Hourglass Constrictions in Chronic Neuralgic Amyotrophy. Journal of Hand Surg Am. 2020 Aug 28 :S0363-5023(20)30412-3.

Argentieri EC, Koff MF, Breighner RE, Endo Y, Shah PH, Sneag DB. Diagnostic accuracy of zero-echo time MRI for the evaluation of cervical neural foraminal stenosis. Spine (Phila Pa 1976). 2018 Jul 1;43(13):928-933.

Jeon T, Vutescu ES, Saltzman EB, Villa JC, Wolfe SW, Lee SK, Feinberg JH, Pownder SL, Dyke JP, Sneag DB. Evaluation of two collagen conduits and autograft in rabbit sciatic nerve regeneration with quantitative magnetic resonance DTI, electrophysiology, and histology. Eur Radiol Exp. 2018 Aug 8;2:19.

Jeon T, Fung MM, Koch KM, Tan ET, Sneag DB. Peripheral nerve diffusion tensor imaging: overview, pitfalls, and future directions. J Magn Reson Imaging. 2018 May;47(5):1171-1189

Sneag DB, Saltzman EB, Meister DW, Feinberg JH, Lee SK, Wolfe SW. The MRI Bullseye Sign: An Indicator of Peripheral Nerve Constriction in Parsonage-Turner Syndrome. Muscle Nerve. 2017 Jul;56(1):99-106.

Deshmukh S, Carrino JA, Feinberg J, Wolfe S, Eagle S, Sneag DB. Pins and needles from fingers to toes: high resolution magnetic resonance imaging of peripheral sensory mononeuropathies. AJR Am J Roentgenol. 2017 Jan;208(1):W1-W10.

Li AE, Sneag DB, Greditzer HG, Johnson CC, Miller TT, Potter HG. MRI of total knee arthroplasty: diagnostic accuracy of patterns of synovitis. Radiology 2016; 281(2):499-506

Sneag DB, Shah P, Koff MF, Lim WY, Rodeo SA, Potter HG. Quantitative ultrashort echo time magnetic resonance imaging evaluation of postoperative menisci: a pilot study. HSS J. 2015; 11:123-9.

Selected Books/Chapters

Krishnan K, Queler SC, Sneag DB. Principles of Postoperative Spine MRI. In: Morrison WB, Carrino JA, Flanders AE, Eds. MRI of the Spine: A Guide for Orthopedic Surgeons. Springer 2020, pp 237-251.

Potter HG, Sneag DB, Chong LR. MRI evaluation of knee ligaments. In: Bonnin M, Amendola NA, Bellamans J, MacDonald SJ, Menetrey J, eds. The Knee Joint: Surgical Techniques and Strategies. 1st ed. Paris, France: Springer. 2011, pp 71-85.

Sneag DB, Potter HG. Imaging of Surgical Site Infections. In Hsu WK, McLaren AC, Springer BD, eds. Let’s Discuss: Surgical Site Infections. Rosemont, Illinois, American Academy of Orthopaedic Surgeons, 2015, pp 63-92.

Sneag DB, Wei YL, Potter HG. The role of MRI in sports medicine. In: Guermazi A, Roemer FW, Crema MD, Eds. Imaging in Sports-Specific Musculoskeletal Injuries. Springer 2016, pp 21-41.

Sneag DB, Potter HG. Imaging of the Healthy and Diseased Spinal Disc. In: Hartl R, Bonassar LJ. Biological Approaches in Spinal Disc Repair. Thieme 2017, pp 20-29.

Selected Presentations

Sneag DB, Aranyi, Zusstone E, Feinberg J, Queler S, Nwawka OK, Lee S, Wolfe SW. Spontaneous Anterior Interosseous Nerve Syndrom (AINS) is a Fascicular Disease of the Median Nerve. RSNA Annual Meeting. Chicago, IL. December 3, 2019.

Sneag DB, Daniels S, De Silva U, Queler S, Newman E, Lin B, Prince M. Novel Contrast Enhanced Vascular Suppression Techniques in MR Neurography. ISS Annual Meeting Scientific Session. Vancouver, BC, Canada. September 9, 2019.

Sneag DB, Schneider R, Wolfe SW, Lee SC, Lee SK, Feinberg JH. Parsonage-Turner Syndrome: Not a Brachial Plexitis. Scientific exhibit at the Annual Meeting of the Radiological Society of North America. Chicago, IL. November 28, 2017.

Sneag DB, Shah P, Breighner RE, Endo Y, Argentieri E, Koff MF. Diagnostic accuracy of zero echo time magnetic resonance imaging for grading of cervical spine neural foraminal stenosis. ISMRM 25th Scientific Meeting & Exhibition. Honolulu, HI. April 22-27, 2017.

Sneag DB, Shah PH, Breighner RE , Koff MF. Diagnostic Accuracy of Zero Echo Time Magnetic Resonance Imaging for Cervical Spine Neuroforaminal Stenosis. Orthopedic Research Society 2017 Annual Meeting. San Diego, CA. March 19-22, 2017.

Sneag DB, Saltzman E, Lee SK, Feinberg J, Wolfe SW. The "Bull's-Eye" Sign on MRI:A Harbinger of 'Hourglass Constrictions' of Peripheral Nerves in Patients with a Clinical Diagnosis of Parsonage-Turner Syndrome. RSNA Annual Conference. Chicago, IL. November 28, 2016.

Sneag DB, Miyoshi M, Fung M, Joen T, Potter HG. Peripheral Nerve Imaging using 2-point Dixon 3D Fast Spine Echo (CUBE-FLEX) with Flow-Saturation Preparation (FSP), Center for Advanced Imaging Innovation & Research. New York, NY. October 13, 2016.


Research Interests

Peripheral Nerve MRI
Diffusion Tensor Imaging


"Unraveling" the Constrictions of Parsonage-Turner Syndrome


"Unraveling" the Constrictions of Parsonage-Turner Syndrome - Q&A

Industry Relationships

Industry Relationships

HSS has a long history of supporting appropriate relationships with industry because they advance HSS's mission to provide the highest quality patient care, improve patient mobility, and enhance the quality of life for all, and to advance the science of orthopedic surgery, rheumatology, and their related disciplines through research and education.

Below are the healthcare industry relationships reported by Dr. Sneag as of March 27, 2023.

  • AMAG Pharmaceuticals, Inc. - Research Support
  • General Electric Healthcare - Consultant; Research Support
  • Medtronic, Inc. - Research Support
  • Siemens Healthcare, USA - Research Support

HSS and its physicians make this information available to patients and the public, thus creating a transparent environment for those who are interested in this information. Further, the HSS Conflicts of Interest and Commitment Policy prohibits physicians from collecting royalties on products they develop that are used on patients at HSS.

Patients should feel free to ask their HSS physicians questions about these relationships.

Dr. Sneag in the News