RaTEScore: A Metric for Radiology Report Generation

Weike Zhao, Chaoyi Wu, Xiaoman Zhang, Ya Zhang, Yanfeng Wang, Weidi Xie


Abstract
This paper introduces a novel, entity-aware metric, termed as Radiological Report (Text) Evaluation (RaTEScore), to assess the quality of medical reports generated by AI models. RaTEScore emphasizes crucial medical entities such as diagnostic outcomes and anatomical details, and is robust against complex medical synonyms and sensitive to negation expressions. Technically, we developed a comprehensive medical NER dataset, RaTE-NER, and trained an NER model specifically for this purpose. This model enables the decomposition of complex radiological reports into constituent medical entities. The metric itself is derived by comparing the similarity of entity embeddings, obtained from a language model, based on their types and relevance to clinical significance. Our evaluations demonstrate that RaTEScore aligns more closely with human preference than existing metrics, validated both on established public benchmarks and our newly proposed RaTE-Eval benchmark.
Anthology ID:
2024.emnlp-main.836
Volume:
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2024
Address:
Miami, Florida, USA
Editors:
Yaser Al-Onaizan, Mohit Bansal, Yun-Nung Chen
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
15004–15019
Language:
URL:
https://aclanthology.org/2024.emnlp-main.836
DOI:
10.18653/v1/2024.emnlp-main.836
Bibkey:
Cite (ACL):
Weike Zhao, Chaoyi Wu, Xiaoman Zhang, Ya Zhang, Yanfeng Wang, and Weidi Xie. 2024. RaTEScore: A Metric for Radiology Report Generation. In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, pages 15004–15019, Miami, Florida, USA. Association for Computational Linguistics.
Cite (Informal):
RaTEScore: A Metric for Radiology Report Generation (Zhao et al., EMNLP 2024)
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PDF:
https://aclanthology.org/2024.emnlp-main.836.pdf