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. 2011:2011:1593-602.
Epub 2011 Oct 22.

Automatic identification of critical follow-up recommendation sentences in radiology reports

Meliha Yetisgen-Yildiz  1 , Martin L Gunn, Fei Xia, Thomas H Payne
Affiliations

Automatic identification of critical follow-up recommendation sentences in radiology reports

Meliha Yetisgen-Yildiz et al. AMIA Annu Symp Proc. 2011.

Abstract

Communication of follow-up recommendations when abnormalities are identified on imaging studies is prone to error. When recommendations are not systematically identified and promptly communicated to referrers, poor patient outcomes can result. Using information technology can improve communication and improve patient safety. In this paper, we describe a text processing approach that uses natural language processing (NLP) and supervised text classification methods to automatically identify critical recommendation sentences in radiology reports. To increase the classification performance we enhanced the simple unigram token representation approach with lexical, semantic, knowledge-base, and structural features. We tested different combinations of those features with the Maximum Entropy (MaxEnt) classification algorithm. Classifiers were trained and tested with a gold standard corpus annotated by a domain expert. We applied 5-fold cross validation and our best performing classifier achieved 95.60% precision, 79.82% recall, 87.0% F-score, and 99.59% classification accuracy in identifying the critical recommendation sentences in radiology reports.

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