task_categories:image-to-text task_categories:image-classification task_categories:zero-shot-classification task_categories:question-answering task_categories:image-text-to-text language:en license:cc-by-nc-sa-4.0 size_categories:100K<n<1M arxiv:2510.04142 region:us MIMIC-CXR Chest Report reinforcement distillation