将自由文本放射科报告转为结构化格式,提升生成一致性与评估准确性。
Automated Structured Radiology Report Generation
- 用大模型重构自由报告为标准化结构化格式。
- 提出新评估指标F1-SRR-BERT,基于55类疾病分类提升评价精度。
- 适合临床辅助报告生成、医学AI评估研究者参考。
从胸部X光片自动生成放射科报告可提升临床效率并减轻放射科医生负担。然而,现有公开数据集如MIMIC-CXR和CheXpert Plus均仅含自由文本报告,其表达方式多样且无结构,导致生成模型难以产出一致且具临床意义的内容,标准评估指标也难以捕捉放射学判断的细微差别。为此,本文提出结构化放射科报告生成(SRRG)新任务,将自由文本报告重构成标准化格式,确保报告清晰、一致、符合临床规范。我们利用大语言模型(LLMs)严格遵循结构化报告要求,构建了全新数据集。同时引入SRR-BERT模型,该模型在55个疾病标签上进行微调,支持更精确的临床级评估。为评估报告质量,提出F1-SRR-BERT指标,通过SRR-BERT的层次化疾病分类体系,弥合自由文本变异与结构化临床报告之间的差距。我们通过五位注册放射科医生的读者研究及广泛基准测试验证了数据集的有效性。
原文摘要 · Abstract (English)
Automated radiology report generation from chest X-ray (CXR) images has the potential to improve clinical efficiency and reduce radiologists' workload. However, most datasets, including the publicly available MIMIC-CXR and CheXpert Plus, consist entirely of free-form reports, which are inherently variable and unstructured. This variability poses challenges for both generation and evaluation: existing models struggle to produce consistent, clinically meaningful reports, and standard evaluation metrics fail to capture the nuances of radiological interpretation. To address this, we introduce Structured Radiology Report Generation (SRRG), a new task that reformulates free-text radiology reports into a standardized format, ensuring clarity, consistency, and structured clinical reporting. We create a novel dataset by restructuring reports using large language models (LLMs) following strict structured reporting desiderata. Additionally, we introduce SRR-BERT, a fine-grained disease classification model trained on 55 labels, enabling more precise and clinically informed evaluation of structured reports. To assess report quality, we propose F1-SRR-BERT, a metric that leverages SRR-BERT's hierarchical disease taxonomy to bridge the gap between free-text variability and structured clinical reporting. We validate our dataset through a reader study conducted by five board-certified radiologists and extensive benchmarking experiments.
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