ARRS
Roentgen Fund Grants Research Awards to Residents/Fellows in Cardiothoracic and
Neuroradiology
Leesburg, VA, February
11, 2026—The American Roentgen Ray Society (ARRS) proudly
recognizes the following radiologists, as well as their institutions and research
projects, with 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.
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.
An application call for the 2027 ARRS Resident/Fellow in Radiology Awards will be announced later this year.
North America’s first radiological society, the American
Roentgen Ray Society (ARRS) remains dedicated to the advancement of
medicine through the profession of medical imaging and its allied sciences. An
international forum for progress in radiology since the discovery of the x-ray,
ARRS maintains its mission of improving health through a community committed to
advancing knowledge and skills with the ARRS
Annual Meeting, the world’s longest continuously published radiology
journal—American Journal of Roentgenology (AJR)—InPractice magazine, ARRS
Symposia, free-access multimedia from our Global Partner Societies,
as well as awarding scholarships via The
Roentgen Fund®.
PIO CONTACT:
Logan K. Young
[email protected]
44211 Slatestone Court
Leesburg, VA 20176