Department of Computer Science and Information Engineering, Providence University, Taichung, Taiwan.
Telemed J E Health. 2012 Apr;18(3):205-12. doi: 10.1089/tmj.2011.0100.
To present the successful experiences of an integrated, collaborative, distributed, large-scale enterprise healthcare information system over a wired and wireless infrastructure in National Taiwan University Hospital (NTUH). In order to smoothly and sequentially transfer from the complex relations among the old (legacy) systems to the new-generation enterprise healthcare information system, we adopted the multitier framework based on service-oriented architecture to integrate the heterogeneous systems as well as to interoperate among many other components and multiple databases. We also present mechanisms of a logical layer reusability approach and data (message) exchange flow via Health Level 7 (HL7) middleware, DICOM standard, and the Integrating the Healthcare Enterprise workflow. The architecture and protocols of the NTUH enterprise healthcare information system, especially in the Inpatient Information System (IIS), are discussed in detail.
The NTUH Inpatient Healthcare Information System is designed and deployed on service-oriented architecture middleware frameworks. The mechanisms of integration as well as interoperability among the components and the multiple databases apply the HL7 standards for data exchanges, which are embedded in XML formats, and Microsoft .NET Web services to integrate heterogeneous platforms.
The preliminary performance of the current operation IIS is evaluated and analyzed to verify the efficiency and effectiveness of the designed architecture; it shows reliability and robustness in the highly demanding traffic environment of NTUH.
The newly developed NTUH IIS provides an open and flexible environment not only to share medical information easily among other branch hospitals, but also to reduce the cost of maintenance. The HL7 message standard is widely adopted to cover all data exchanges in the system. All services are independent modules that enable the system to be deployed and configured to the highest degree of flexibility. Furthermore, we can conclude that the multitier Inpatient Healthcare Information System has been designed successfully and in a collaborative manner, based on the index of performance evaluations, central processing unit, and memory utilizations.
介绍国立台湾大学医院（NTUH）在有线和无线网络基础设施上，成功整合、协作、分布、大规模企业医疗信息系统的经验。为了顺利有序地从旧（遗留）系统的复杂关系过渡到新一代企业医疗信息系统，我们采用基于面向服务架构的多层框架来整合异构系统，并实现多个组件和多个数据库之间的互操作。我们还介绍了逻辑层可重用方法和通过健康水平 7（HL7）中间件、DICOM 标准和集成医疗企业工作流进行数据（消息）交换的机制。详细讨论了 NTUH 企业医疗信息系统的体系结构和协议，特别是在住院信息系统（IIS）中。
NTUH 住院医疗信息系统是基于面向服务架构中间件框架设计和部署的。组件和多个数据库之间的集成和互操作性机制应用 HL7 标准进行数据交换，这些数据以 XML 格式嵌入，并使用 Microsoft.NET Web 服务集成异构平台。
初步评估和分析当前操作 IIS 的性能，以验证设计架构的效率和有效性；它在 NTUH 高要求的流量环境中表现出可靠性和鲁棒性。
新开发的 NTUH IIS 提供了一个开放和灵活的环境，不仅可以轻松共享其他分院的医疗信息，还可以降低维护成本。HL7 消息标准被广泛采用，以涵盖系统中的所有数据交换。所有服务都是独立的模块，使系统能够达到最高的灵活性进行部署和配置。此外，我们可以得出结论，基于性能评估、中央处理单元和内存利用率，多层住院医疗信息系统已成功设计并协作完成。
