Mr. Selnur Erdal Profile

Selnur Erdal

at Ohio State Univ Wexner Medical Ctr

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Proceedings Article | 21 March 2007 Paper

Flexible patient information search and retrieval framework: pilot implementation

Selnur Erdal, Umit Catalyurek, Joel Saltz, Jyoti Kamal, Metin Gurcan

Proceedings Volume 6516, 65160I (2007) https://doi.org/10.1117/12.709758

KEYWORDS: Picture Archiving and Communication System, Lung, Image retrieval, Databases, Lung cancer, Java, Medical imaging, Radiology, Data modeling, Image processing

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Medical centers collect and store significant amount of valuable data pertaining to patients' visit in the form of medical free-text. In addition, standardized diagnosis codes (International Classification of Diseases, Ninth Revision, Clinical Modification: ICD9-CM) related to those dictated reports are usually available. In this work, we have created a framework where image searches could be initiated through a combination of free-text reports as well as ICD9 codes. This framework enables more comprehensive search on existing large sets of patient data in a systematic way. The free text search is enriched by computer-aided inclusion of additional search terms enhanced by a thesaurus. This combination of enriched search allows users to access to a larger set of relevant results from a patient-centric PACS in a simpler way. Therefore, such framework is of particular use in tasks such as gathering images for desired patient populations, building disease models, and so on. As the motivating application of our framework, we implemented a search engine. This search engine processed two years of patient data from the OSU Medical Center's Information Warehouse and identified lung nodule location information using a combination of UMLS Meta-Thesaurus enhanced text report searches along with ICD9 code searches on patients that have been discharged. Five different queries with various ICD9 codes involving lung cancer were carried out on 172552 cases. Each search was completed under a minute on average per ICD9 code and the inclusion of UMLS thesaurus increased the number of relevant cases by 45% on average.

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