Tammie L.S. Benzinger, MD, PhD

Professor of Radiology

Chief, MRI Service
Professor of Neurological Surgery, Biology and Biological Sciences

Clinical Expertise:

Tammie L.S. Benzinger, MD, PhD, is a professor of radiology and serves as chief of MRI service at Mallinckrodt Institute of Radiology (MIR) at Washington University School of Medicine in St. Louis. Benzinger’s research group, part of MIR’s Neuroimaging Labs Research Center, primarily focuses on the study of Alzheimer’s disease, mild cognitive impairment, autosomal dominant Alzheimer’s disease (ADAD) and related disorders. She uses PET and MRI imaging to investigate biomarkers she believes will become significant tools in detecting and diagnosing degenerative brain diseases before symptoms occur. Her group also serves as the imaging core for the Knight Alzheimer’s Disease Research Center, international studies of ADAD, the Dominantly Inherited Alzheimer Network (DIAN) and the DIAN-Therapeutic Unit.

In 2018, Benzinger, who is also a professor of neurological surgery, received the Women in Neuroradiology Leadership Award from the American Society of Neuroradiology and the Distinguished Investigator Award from the Academy for Radiology and Biomedical Imaging Research. She is an alumna, having completed both her diagnostic residency and a fellowship in neuroradiology at MIR. Benzinger earned both her medical and doctoral degrees from the University of Chicago and her bachelor’s degree from Williams College in Williamstown, Massachusetts.

Clinical Interests


Research Interests

advanced neuromagnetic resonance techniques, directional diffusivity measurements derived from diffusion tensor imaging (DTI) to measure axonal and myelin damage in pediatric and adult demyelination, dysmyelinating diseases, Alzheimer's disease

Link to Publications

Education History


Neuroradiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis


Diagnostic Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis

Medical Degree

University of Chicago


University of Chicago


Williams College


American College of Radiology
American Medical Association
Radiological Society of North America
International Society for Magnetic Resonance in Medicine
American Society of Neuroradiology


2022, 2021 Highly Cited Researcher, Clarivate
2021 Fellow, American Association for Women in Radiology
2021 Distinguished Scholar in Medical Imaging, Emory University
2020 membership election, American Society of Clinical Investigation
2018 Women in Neuroradiology Leadership Award, American Society for Neuroradiology
2018 Distinguished Investigator Award, Academy for Radiology and Biomedical Imaging Research
2018 Team Award for Quality Improvement, MRI Workflow for Patients with Cardiac Implanted Electronic Devices (CIEDS), Barnes-Jewish Hospital
2013 Alene and Meyer Kopolow Award for Geriatrics, Psychiatry and Neurology, Washington University Medical Center
2011 Outstanding Postdoctoral Faculty Mentor Award, Washington University School of Medicine in St. Louis
2008–2010 Research Foundation Scholar, American Society for Neuroradiology
2008–2010 Scholar, American Roentgen Ray Society