RT info:eu-repo/semantics/article T1 Preliminary analysis of AI-based thyroid nodule evaluation in a non-subspecialist endocrinology setting A1 Fernández Velasco, Pablo A1 Estévez Asensio, Lucía A1 Torres Torres, Beatriz A1 Ortolá Buigues, Ana A1 Gómez Hoyos, Emilia A1 Delgado García, Esther A1 Luis Román, Daniel Antonio de A1 Díaz Soto, Gonzalo K1 Thyroid nodule K1 Artificial intelligence K1 AI-DSS K1 Ultrasound K1 ACR TI-RADS K1 ATA guidelines K1 Risk stratification K1 General endocrinology K1 32 Ciencias Médicas AB Purpose Thyroid nodules are commonly evaluated using ultrasound-based risk stratification systems, which rely on sub-jective descriptors. Artificial intelligence (AI) may improve assessment, but its effectiveness in non-subspecialist settings isunclear. This study evaluated the impact of an AI-based decision support system (AI-DSS) on thyroid nodule ultrasoundassessments by general endocrinologists (GE) without subspecialty thyroid imaging training.Methods A prospective cohort study was conducted on 80 patients undergoing thyroid ultrasound in GE outpatient clinics.Thyroid ultrasound was performed based on clinical judgment as part of routine care by GE. Images were retrospectivelyanalyzed using an AI-DSS (Koios DS), independently of clinician assessments. AI-DSS results were compared with initialGE evaluations and, when referred, with expert evaluations at a subspecialized thyroid nodule clinic (TNC). Agreement inultrasound features, risk classification by the American College of Radiology Thyroid Imaging Reporting and Data System(ACR TI-RADS) and American Thyroid Association guidelines, and referral recommendations was assessed.Results AI-DSS differed notably from GE, particularly assessing nodule composition (solid: 80%vs.36%,p < 0.01), echo-genicity (hypoechoic:52%vs.16%,p < 0.01), and echogenic foci (microcalcifications:10.7%vs.1.3%,p < 0.05). AI-DSSclassification led to a higher referral rate compared to GE (37.3%vs.30.7%, not statistically significant). Agreementbetween AI-DSS and GE in ACR TI-RADS scoring was moderate (r = 0.337;p < 0.001), but improved when comparing GEto AI-DSS and TNC subspecialist (r = 0.465;p < 0.05 and r = 0.607;p < 0.05, respectively).Conclusion In a non-subspecialist setting, non-adjunct AI-DSS use did not significantly improve risk stratification or reducehypothetical referrals. The system tended to overestimate risk, potentially leading to unnecessary procedures. Furtheroptimization is required for AI to function effectively in low-prevalence environment. PB Springer YR 2025 FD 2025 LK https://uvadoc.uva.es/handle/10324/75949 UL https://uvadoc.uva.es/handle/10324/75949 LA eng NO Endocrine, 2025. NO Producción Científica DS UVaDOC RD 14-jun-2025