Feb. 11, 2026 —The American Roentgen Ray Society (ARRS) has announced the following radiologists, as well as their institutions and research projects, as recipient of the 2026 ARRS Resident/Fellow in Radiology Awards:
- Shenghua (Sean) Zhu, MD | Massachusetts General Hospital, Harvard Medical School; “Portable Low-Field MRI for Rapid Detection and Monitoring of ARIA-E in Lecanemab-Treated Alzheimer’s Disease Patients;" Resident/Fellow in Radiology President’s Award
- Stephan Altmayer, MD, PhD | Stanford University; “Radiologist Performance in Prediction of Malignancy After Nondiagnostic Lung Biopsies;” Resident/Fellow in Radiology Melissa Rosado de Christenson Award
- Suryansh Bajaj, MD | University of Arkansas; “Perfusion-Derived Collateral Status and Its Association With Clinical Outcomes in Acute Ischemic Stroke: A Systematic Review and Meta-Analysis;" Resident/Fellow in Radiology Executive Council Award
Supported by The Roentgen Fund, the ARRS Resident/Fellow in Radiology Awards are available to all ARRS In-Training Members in imaging and allied sciences research to acknowledge their work and present their results during the ARRS Annual Meeting. ARRS Resident/Fellow in Radiology Awards are based on the competence and promise of the candidate in radiological research, education, or administration and the scientific merit and potential impact of the candidate’s research.
Since 1990, the Roentgen Fund has granted millions of dollars to hundreds of imaging professionals for both research pursuits and professional development. Today, through six vital scholarship and fellowship programs, the generosity of The Roentgen Fund’s donors is channeled to every corner of the globe—establishing dual foundations in innovation and leadership for a true diversity of radiology’s next generation.
Drs. Zhu, Altmayer, and Bajaj will present their research findings during the 2026 ARRS Annual Meeting at the David L. Lawrence Convention Center in Pittsburgh, PA.
An application call for the 2027 ARRS Resident/Fellow in Radiology Awards will be announced later this year.
Bios
Shenghua (Sean) Zhu, MD, PhD, is a neuroradiology fellow at Massachusetts General Hospital and Harvard Medical School. He completed his MD/PhD at the University of Manitoba, where his doctoral work focused on neuroinflammation in Alzheimer’s disease, followed by diagnostic radiology residency at the University of Ottawa. Dr. Zhu’s research and clinical interests include imaging biomarkers of neurodegenerative and neurovascular disease, with a particular emphasis on amyloid-related imaging abnormalities (ARIA) in patients receiving anti-amyloid therapies. Beyond Alzheimer’s disease, he has co-led a Canada-wide study on the impact of the COVID-19 pandemic on outcomes of patients with acute ischemic stroke treated with endovascular therapy. Author of more than 20 peer-reviewed publications, Dr. Zhu has presented at major international meetings, including the American Society of Neuroradiology, as well as the Alzheimer’s Association International Conference. He also serves as a reviewer for several journals, such as the Canadian Association of Radiologists Journal and Radiology Advances, and has received national research awards recognizing his translational work bridging imaging and clinical neuroscience. His long-term goal is to integrate advanced neuroimaging, computational modeling, and clinical care to improve safety and precision in the treatment of patients with Alzheimer’s disease and related disorders.
Born and raised in Brazil, Stephan Altmayer, MD, PhD, completed his medical training there before moving to the United States to pursue his radiology training. He is currently a fourth-year diagnostic radiology resident at Stanford University and will stay on for his fellowship in cardiothoracic imaging. His academic interests focus on cardiothoracic and nuclear medicine imaging. Dr. Altmayer has been actively engaged in research throughout his training, contributing to meta-analyses, multicenter collaborations, and grant-funded projects. He is the recipient of a Society of Thoracic Radiology research grant supporting his work on MRI-based lung nodule assessment. His career path has been strongly shaped by the guidance of his current and prior mentors, including Drs. Ann Leung, Bruno Hochhegger, and Yuchi Han. Outside the reading room, Stephan is passionate about teaching, mentoring, and keeping life balanced. He can be found lifting weights at CrossFit, experimenting with Brazilian barbecue, or curating playlists of house music.
Suryansh Bajaj, MD, is a diagnostic radiology resident at the University of Arkansas for Medical Sciences (UAMS) in Little Rock. Growing up in New Delhi, India, he was drawn early to medicine’s blend of science and service. During medical school at Maulana Azad Medical College, University of Delhi, he discovered his passion for radiology, captivated by how imaging reveals the hidden story of disease and guides patient care. Dr. Bajaj’s academic journey has included clinical rotations at Mayo Clinic Florida and a neuroradiology research fellowship at Yale School of Medicine, where he studied imaging in acute ischemic stroke. These formative experiences sparked a lasting interest in neuroradiology, which continues to drive his academic and clinical pursuits. Throughout residency, Dr. Bajaj has authored multiple peer-reviewed publications, presented at national conferences, and been honored with the Radiological Society of North America’s (RSNA) Roentgen Resident Research Award, a Best Article Award from the Journal of the American College of Radiology, and an ARRS Certificate of Merit, among others. Also, he served as RSNA’s Resident Representative at UAMS, promoting resident engagement and leadership. Beyond medicine, he is currently enrolled in the Walton School of Business’ certificate program for residents and fellows, strengthening his foundation in leadership and health care management.
July 28, 2026 
