Authors:
Peter Geibel
1
;
Hebun Erdur
1
;
Lothar Zimmermann
1
;
Stefan Krüger
1
;
Kati Jegzentis
2
;
Josef Schepers
1
;
Anne Becker
3
;
Frank Müller
1
;
Christian Hans Nolte
1
;
Jan Friedrich Scheitz
1
;
Serdar Tütüncü
1
;
Tatiana Usnich
1
;
Markus Frick
3
;
Martin Trautwein
3
;
Thorsten Schaaf
1
;
Alfred Holzgreve
3
and
Thomas Tolxdorff
1
Affiliations:
1
Charité - Universitätsmedizin Berlin, Germany
;
2
Charité - Universitätsmedizin Berlin, Germany
;
3
Vivantes - Netzwerk für Gesundheit GmbH, Germany
Keyword(s):
Ontologies, Information Extraction, Computational Linguistics, RDFS, Secondary Use of Health Data, Patient Recruitment, Clinical Data Warehouse.
Related
Ontology
Subjects/Areas/Topics:
Applications
;
Applications and Case-studies
;
Artificial Intelligence
;
Data Engineering
;
Domain Analysis and Modeling
;
Enterprise Ontology
;
Knowledge Engineering and Ontology Development
;
Knowledge-Based Systems
;
Natural Language Processing
;
Ontologies and the Semantic Web
;
Pattern Recognition
;
Symbolic Systems
Abstract:
In this paper, we describe the use of ontologies in the context of a system for recruiting patients for clinical trials, which is currently being tested at the {\em Charit\'{e} – Universitätsmedizin Berlin}, one of the largest university hospitals in Europe. The main purpose of the CRDW (Clinical Research Data Warehouse) is to support patient recruitment for clinical trials based on routine data from the hospital's clinical information system (CIS). In contrast to most other systems for similar purposes, the CRDW also makes use of information that is present in clinical documents like admission reports, radiological findings, and discharge letters. The linguistic analysis recognizes negated and coordinated phrases. It is supported by clinical domain ontologies that enable the identification of main terms and their properties, as well as semantic search with synonyms, hypernyms, and syntactic variants. The focus of this paper is the description of our ontology model, which we tailor
ed to the particular requirements of our application. In the article, we will also provide an evaluation of the system based on experimental data obtained from the daily routine work of the study assistants.
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