Study Of Health Care Information Framework And Information Model

In the current health care environment, e-health and e-healthcare have emerged as important concepts. They aim at improve the quality and cost effectiveness of health care by the utilization of information technologies. The basic information model plays an important role throughout the whole life cycle of health care information, including the creation, storage, transmition and utilization. Modeling of health care information is a key task.Unlike other domains, health care information is of very high complexity. First, the modality and amount of health care information can be incredibly large, including but not limited to observations, laboratory tests, diagnostic imaging reports, treatments, therapies, drugs administered, and so on. The relationships among the information are also very complex. Second, the constitution of health care information is always not the same among different contries, i.e., there are spatial differences. Last, the rate of change of health care domain knowledge is high. As a concequence, both the modality and the relationships among health care information change along time, i.e., there are temporal differences. All of those characteristics pose big challenge to the information modeling work.This dissertation focuses on the study of modeling of health care information. The main contributions are followings:(?) Review the recent progress of related work systematically. Make a thorough analysis of the constitution of health care information.(?) To address the complexity, as well as the spatial and temporal variability issues of healch care information, a multi-dimentional and multi-layer health care information framework is presented. In this information framework, healthcare act is considered as the basic unit of information.(?) Based on the health care information framework, a "health care information profile" tool is designed to describe the information processing ability of an information system.(?) Based on the health care information framework, a two-level health care information model is brought out. It follows the architecture of health care information framework to address the information modeling problems.(?) An application framework of health care information model is introduced, which consist of a health care data center, an archetype repository, a set of information services and various upper applications.(?) Design and implement an electronic medical record system based on the information framework and the information model. The system consist a EMR data center, an information service middleware, an EMR integrated viewer, together with some other software components.The system practice shows that both the information framework and the information model can solve the complexity, the spatial and temporal variability problems of healch care information. The results of this dissertation provide a methodological basis for the representation and organization of health care information. They also can be applied to other domains besides healthcare.