Charles E Kahn Jr., MD, MS, FACR

Professor of Radiology at the Hospital of the University of Pennsylvania
Active Medical Staff, Department of Radiology, Chester County Hospital, West Chester, PA
Active Medical Staff , Penn Presbyterian Medical Center, Philadelphia, PA
Active Medical Staff - Radiologist, Pennsylvania Hospital, Philadelphia, PA
Attending, Department of Radiology, Hospital of the University of Pennsylvania
Vice Chair, Department of Radiology, University of Pennsylvania
Department: Radiology
Contact information
Department of Radiology
Perelman School of Medicine
University of Pennsylvania
3400 Spruce Street - 1 Silverstein
Philadelphia, PA 19104
Perelman School of Medicine
University of Pennsylvania
3400 Spruce Street - 1 Silverstein
Philadelphia, PA 19104
Office: 215-662-3032
Fax: 215-662-7011
Fax: 215-662-7011
Email:
charles.kahn@uphs.upenn.edu
charles.kahn@uphs.upenn.edu
Publications
Links
Search PubMed for articles
Radiology Gamuts Ontology: An ontology of 16,912 diseases, interventions, and imaging findings with their causal relationships.
RadElement: Common Data Elements for Radiology. An initiative of RSNA and ACR to promote interoperable and discoverable data in radiology.
RSNA Radiology Report Template Library -- Best-practice radiology reporting templates.
Radiology: Artificial Intelligence -- the leading scientific journal on AI in radiology, published by RSNA.
Search PubMed for articles
Radiology Gamuts Ontology: An ontology of 16,912 diseases, interventions, and imaging findings with their causal relationships.
RadElement: Common Data Elements for Radiology. An initiative of RSNA and ACR to promote interoperable and discoverable data in radiology.
RSNA Radiology Report Template Library -- Best-practice radiology reporting templates.
Radiology: Artificial Intelligence -- the leading scientific journal on AI in radiology, published by RSNA.
Education:
BA (Mathematics)
University of Wisconsin, Madison, 1981.
MD (Doctor of Medicine)
University of Illinois College of Medicine at Chicago, 1985.
MS (Computer Sciences)
University of Wisconsin, Madison, 2003.
Permanent linkBA (Mathematics)
University of Wisconsin, Madison, 1981.
MD (Doctor of Medicine)
University of Illinois College of Medicine at Chicago, 1985.
MS (Computer Sciences)
University of Wisconsin, Madison, 2003.
Selected Publications
Freeman CW, Mattay R, Kahn CE Jr, Loevner L, Butala AA, Malhotra NR, Hassankhani A: Time is spine: A novel radiology reporting system for optimizing spine oncology decision-making and reducing time to treatment. AJNR Am J Neuroradiol Page: ajnr.A8845, 2025.Tejani AS, Khosravi B, Savage CH, Moy L, Kahn CE, Yi PH: AI-generated podcast summaries of Radiology articles: analysis of content and quality. Radiology 314(3): e243270, 2025.
Su Y, Babore YB, Kahn CE Jr: A large language model to detect negated expressions in radiology reports. J Imaging Inform Med 38(3): 1297-1303, 2025.
Mehdiratta G, Duda JT, Elahi A, Borthakur A, Chatterjee N, Gee J, Sagreiya H, Witschey WRT, Kahn CE Jr: Automated integration of AI results into radiology reports using common data elements. J Imaging Inform Med 2025 Notes: doi: 10.1007/s10278-025-01414-9.
Kim J, Chae A, Duda J, Borthakur A, Rader DJ, Gee JC, Kahn CE Jr; Penn Medicine BioBank; Witschey WR, Sagreiya H : Automated characterization of abdominal MRI exams using deep learning. Sci Rep 15(1): 27044, 2025.
Kahn CE Jr: Generating focused probabilistic models for diagnosis of rare diseases. Stud Health Technol Inform 327: 32-36, 2025.
Kitamura FC, Prevedello LM, Colak E, Halabi SS, Lungren MP, Ball RL, Kalpathy-Cramer J, Kahn CE Jr, Richards T, Talbott JF, Shih G, Lin HM, Andriole KP, Vazirabad M, Erickson BJ, Flanders AE, Mongan J: Lessons learned in building expertly annotated multi-institution datasets and hosting the RSNA AI challenges. Radiol Artif Intell 6(3): e230227, May 2024 Notes: https://doi.org/10.1148/ryai.230227.
Maier-Hein L, Reinke A, Godau P, Tizabi MD, Buettner F, Christodoulou E, Glocker B, Isensee F, Kleesiek J, Kozubek M, Reyes M, Riegler MA, Wiesenfarth M, Kavur AE, Sudre CH, Baumgartner M, Eisenmann M, Heckmann-Nötzel D, Rädsch T, Acion L, Antonelli M, Arbel T, Bakas S, Benis A, Blaschko MB, Cardoso MJ, Cheplygina V, Cimini BA, Collins GS, Farahani K, Ferrer L, Galdran A, van Ginneken B, Haase R, Hashimoto DA, Hoffman MM, Huisman M, Jannin P, Kahn CE, Kainmueller D, Kainz B, Karargyris A, Karthikesalingam A, Kofler F, Kopp-Schneider A, Kreshuk A, Kurc T, Landman BA, Litjens G, Madani A, Maier-Hein K, Martel AL, Mattson P, Meijering E, Menze B, Moons KGM, Müller H, Nichyporuk B, Nickel F, Petersen J, Rajpoot N, Rieke N, Saez-Rodriguez J, Sánchez CI, Shetty S, van Smeden M, Summers RM, Taha AA, Tiulpin A, Tsaftaris SA, Van Calster B, Varoquaux G, Jäger PF.: Metrics reloaded: recommendations for image analysis validation. Nat Methods 21(2): 195-212, Feb 2024.
Reinke A, Tizabi MD, Baumgartner M, Eisenmann M, Heckmann-Nötzel D, Kavur AE, Rädsch T, Sudre CH, Acion L, Antonelli M, Arbel T, Bakas S, Benis A, Buettner F, Cardoso MJ, Cheplygina V, Chen J, Christodoulou E, Cimini BA, Farahani K, Ferrer L, Galdran A, van Ginneken B, Glocker B, Godau P, Hashimoto DA, Hoffman MM, Huisman M, Isensee F, Jannin P, Kahn CE, Kainmueller D, Kainz B, Karargyris A, Kleesiek J, Kofler F, Kooi T, Kopp-Schneider A, Kozubek M, Kreshuk A, Kurc T, Landman BA, Litjens G, Madani A, Maier-Hein K, Martel AL, Meijering E, Menze B, Moons KGM, Müller H, Nichyporuk B, Nickel F, Petersen J, Rafelski SM, Rajpoot N, Reyes M, Riegler MA, Rieke N, Saez-Rodriguez J, Sánchez CI, Shetty S, Summers RM, Taha AA, Tiulpin A, Tsaftaris SA, Van Calster B, Varoquaux G, Yaniv ZR, Jäger PF, Maier-Hein L: Understanding metric-related pitfalls in image analysis validation. Nat Methods 21(2): 182-194, Feb 2024.
Song I, Thompson EW, Verma A, MacLean MT, Duda J, Elahi A, Tran R, Raghupathy P, Swago S, Hazim M, Bhattaru A, Schneider C, Vujkovic M, Torigian DA, Kahn CE, Gee JC, Borthakur A, Kripke CM, Carson CC, Carr R, Jehangir Q, Ko YA, Litt H, Rosen M, Mankoff DA, Schnall MD, Shou H, Chirinos J, Damrauer SM, Serper M, Chen J, Rader DJ; Penn Medicine BioBank; Witschey WRT, Sagreiya H.: Clinical correlates of CT imaging-derived phenotypes among lean and overweight patients with hepatic steatosis. Sci Rep 14: 53, Jan 2024.