Medicine
Comparative evaluation of large language models for text-based diagnostic reasoning in fetal central nervous system MRI
Fetal magnetic resonance imaging (MRI) plays an important role in evaluating prenatal central nervous system (CNS) abnormalities, but expert interpretation and counseling remain challenging. Large language models (LLMs) may support text-based diagnostic reasoning, yet their performance in fetal CNS MRI has not been well characterized. The study aimed to compare ChatGPT, Gemini, and DeepSeek in text-based diagnostic reasoning for fetal CNS MRI cases. This retrospective single-center study included 85 fetal MRI cases …