The American Roentgen Ray Society (ARRS) proudly recognizes the following four radiologists and their research projects with the 2025 ARRS Resident/Fellow in Radiology Awards:
- Jordan H. Chamberlin, MD
- Resident/Fellow in Radiology President’s Award “Machine Learning Based Optimization of Root Factors Associated with Image Quality of Myocardial Late Iodine Enhancement”
- Shadi Ebrahimian, MD
- Resident/Fellow in Radiology Executive Council Award “Evaluating AI Performance in Large Vessel Occlusion Detection: Impact on Time-to-Thrombectomy and Clinical Workflow Efficiency”
- Ariel S. Kniss, MD, PhD
- Resident/Fellow in Radiology Executive Council Award “Mammographic Breast Density and Its Impact on Screening Performance Metrics: An Analysis of 489,439 Screening Mammograms”
- Capt. Tej Mehta, MD
- Resident/Fellow in Radiology Melissa Rosado de Christenson Award “Multiparametric, Multimodal Delta-Radiomics for the Prediction of Transarterial Chemoembolization Outcomes in Hepatocellular Carcinoma”
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.
Scholar Update: Derek Nguyen on Imaging-Focused Management of Architectural Distortions
According to research published in the American Journal of Roentgenology (AJR), imaging surveillance may be a safe alternative to surgical excision for architectural distortions (ADs) detected by digital breast tomosynthesis (DBT) alone with no sonographic correlate showing benign pathology without atypia on core needle biopsy (CNB). “The malignancy rate was 0% for ADs without atypia, versus 20% for ADs with atypia, on CNB,” explained first author and 2022 recipient of The Roentgen Fund’s Melissa Rosado de Christenson Award Derek L. Nguyen, MD, from the radiology department at Duke University School of Medicine in Durham, NC. Dr. Nguyen and colleagues’ AJR accepted manuscript included patients with ADs detected by DBT alone with no ultrasound correlate and nonmalignant results on stereotactic CNB with 12 vacuum-assisted 9-gauge cores from July 1, 2020 to December 31, 2023. ADs detected by DBT alone with no ultrasound correlate showing concordant benign pathology or radial scar without atypia on CNB were recommended to undergo 6-month and 12-month diagnostic imaging follow-up before returning to annual screening, whereas those showing atypia (with or without radial scar) on CNB were recommended to undergo surgical excision; however, patients could electively undergo the alternative management option. Nguyen et al. then assessed malignancy rates, considering ADs to be nonmalignant based on results of repeat CNB, surgical excision, or 12-month diagnostic imaging follow-up. Ultimately, for ADs detected by DBT alone with no ultrasound correlate and nonmalignant results on CNB obtaining 12 vacuum-assisted 9-gauge samples, malignancy rates were 0% (0/94) in the absence of atypia (with or without radial scar), versus 20% (3/15) in the presence of atypia (with or without radial scar), on CNB.
And during the 2025 ARRS Annual Meeting in San Diego, Dr. Nguyen participated in Breast Procedures: Tips, Tricks, and Updates with Tanya Moseley, MD, 2025 ARRS Distinguished Educator of the Year.
Roentgen Fund Roll Call
Dozens of prior awardees, like Dr. Nguyen, returned to present during all four days of the 2025 ARRS Annual Meeting in San Diego, CA. Congratulations to these trailblazing scholars and visionary educators—all of whom will continue to shape the future of our specialty:
- Opportunities and Obligations in Imaging Patients with Alzheimer’s Disease with Tammie L.S. Benzinger, MD, 2008 ARRS Scholar
- Critical Education for Safe, Ethical, and Successful AI in Radiology with Charles E. Kahn Jr., MD, MS, 1993 ARRS Scholar
- Wellness Symposium – Creating a Positive Work Environment in Radiology with Christine B. Chung, MD, 2003 Figley Fellow
- ARRS Scholar Presentation – Leveraging the “Art of Medicine” within Radiology: Investigation of Report Framing as a Digital Therapeutic To Mitigate Nocebo Effects with Steven A. Rothenberg, MD, BS, 2023 ARRS Scholar
- ARRS Scholar Presentation – Deep Learning Tool to Eliminate Nephrographic Phase Images and Reduce Radiation Dose in CT Urography with Andrew L. Wentland, MD, PhD, 2023 ARRS Scholar
- Quality and Safety in Radiology – The Unrelenting Pursuit of Excellence with Richard B. Gunderman, MD, PhD, 2011 Berlin Scholar
- Cardiac Imaging in the Acute Setting with Jadranka Stojanovska, MD, 2015 Figley Fellow and Brett W. Carter, MD, 2016 Figley Fellow
- Challenging Abdominal Cases with Perry J. Pickhardt, MD, 2002 Figley Fellow
- Radiology Year in Review with Erin Alaia, MD, 2025 Figley Fellow and Domen Plut, MD, PhD, 2025 Rogers Fellow
- Mastering Radiology: A Comprehensive Board Review for Residents and Refresher for Radiologists in Practice with Tanya Moseley, MD, 2025 Distinguished Educator
- Categorical Course – Imaging in the ED Musculoskeletal Emergencies: Fractures and Infections with Sameer Raniga, MD, FRCR, 2018 Rogers Fellow
- Gastrointestinal Imaging – Gastric Gliomas/Tumors, Bowel Ischemia and Bariatric Surgery with Benjamin Yeh, MD, 2006 ARRS Scholar
- GI Post-treatment Imaging with Samuel Galgano, MD, 2022 Figley Fellow
- Neuroradiology – CT Radiomics and Machine Learning with Suresh K. Mukherji, MD, 1998 Figley Fellow
- Radiology Case Review – Musculoskeletal Imaging with Erin Alaia, MD, 2025 Figley Fellow
- Award Winning Exhibits – Gastrointestinal Imaging with Benjamin Yeh, MD, 2006 ARRS Scholar
- ABR Update: 2025 with John A. Kaufman, MD, 1996 Figley Fellow
- Gastrointestinal Imaging – Hepatocellular Carcinoma with Claude B. Sirlin, MD, 2002 ARRS Scholar
- Upper Extremity Challenging Cases with Christine B. Chung, MD, 2003 Figley Fellow
- Categorical Course – Comprehensive Insights into Transplant Imaging: Bone Marrow Transplant with Meghan G. Lubner, MD, 2018 Figley Fellow
- Neurovascular Disease with Achala S. Vagal, MD, 2012 ARRS Scholar
- Gastrointestinal Imaging – Treatment Response Assessment with Neeraj Lalwani, MD, 2019 Figley Fellow
