Medical Information Retrieval Based On Standard Terminology Of RIM

As the rapid development of Digital Hospital in China, each of the medical institutions accumulated a lot of clinical data in database. However, clinicians, researchers and managers are almost impossible to retrieve the data freely without the help of engineers, which supports higher level of data analysis. Although the engineers have already developed a number of retrieval and analytical tools, the tools could only support the retrieval requirement known and their functional limitations are difficult to avoid. Therefore, it is greatly valuable to research a medical information retrieval method, by which clinicians, researchers and managers are free to retrieve. In addition, as no standard design schema of clinical database, the structures of different medical institutions' database are different. So, the medical information retrieval method should adapt to such a heterogeneous database environment.As a result, the thesis studies on the retrieval interface based on RIM standard terminology model, and medical term-mapping system based on XML technology. We try to build a medical information retrieval platform based on RIM standard terminology interface, which supports clinical data mining and analysis by clinicians, researchers and managers. Specifically speaking:1. Construct retrieval interface based on RIM standard terminology, on the basis of analysis RIM standard terminology model of HL7 Version 3 in detail, and expanding the content of RIM terminology by UMLS.2. Design medical term-mapping system by XML technology and Python script, which supports diversification operation, and establish a mapping mechanism between RIM standard terminology interface and heterogeneous database.3. Analyze medical retrieval requirement deeply, and design a medical retrieval method to construct retrieval condition using standard terminology, based on standard terminology interface and medical term-mapping system. The method returns patient and diagnosis index information which consistent with the retrieval condition.Based on the research result above, this thesis shows an example to achieve a medical information retrieval system based on RIM terminology in a clinical database, with medical term-mapping system built. Experiment results show that the medical information retrieval method given by the thesis, which based on interface of RIM standard terminology, solves the problem preferably, and it provides a way to solve the problem completely.