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A Framework for Extracting, and Validating Named-Entities to Integrate Openehr Using the Example of Free Text
Nektarios Ladas1, Stefan Franz1, Maximilian Schieck2
1Peter L. Reichertz Institute for Medical Informatics, TU Braunschweig and Hannover Medical School, Germany.
Studies in Health Technology and Informatics
|August 8, 2025
Summary
This study introduces a novel pipeline for extracting, validating, and integrating unstructured clinical text into openEHR. The system achieves high reliability in processing physician notes, addressing a key challenge in healthcare data management.
Area of Science:
- Medical Informatics
- Clinical Data Management
- Natural Language Processing
Background:
- Extracting information from unstructured physician notes in hospitals is a significant challenge.
- Existing solutions lack efficiency and reliability, often requiring human intervention.
- Factors like limited training data and sensitive patient information complicate automated processing.
Purpose of the Study:
- To develop a complete process for efficient data extraction, validation, and integration from unstructured clinical texts into openEHR.
- To address the open problem of reliable information extraction from physician-written hospital documents.
- To demonstrate the utility of the developed tools using molecular genetic findings.
Main Methods:
- Development of a comprehensive toolset for unstructured text processing.
- Implementation of a pipeline for data extraction, validation, and integration into openEHR.
- Application of the pipeline to free-text molecular genetic findings for use-case demonstration.
Main Results:
- The developed pipeline successfully extracts, validates, and integrates data from unstructured clinical texts.
- A specific use case involving molecular genetic findings demonstrated the system's effectiveness.
- The validation of the pipeline achieved a high F-score of 0.98.
Conclusions:
- The developed tools provide an efficient and reliable solution for integrating unstructured clinical data into openEHR.
- The pipeline effectively overcomes challenges associated with processing complex medical texts.
- The high F-score validates the robustness and accuracy of the proposed data integration method.

