KEYWORDS: Standards development, Medicine, Data modeling, System integration, Systems modeling, Databases, Therapeutics, Medical research, Picture Archiving and Communication System, Analytical research
Many countries have set long-term objectives for establishing an Electronic Healthcare Records system(EHRs). Various
IT Strategies note that integration of EHR systems has a high priority. Because the EHR systems are based on different
information models and different technology platforms, one of the key integration problems in the realization of the
EHRs for the continuity of patient care, is the inability to share patient records between various institutions. Integrating
the Healthcare Enterprise (IHE) committee has defined the detailed implementations of existing standards such as
DICOM, HL7, in a publicly available document called the IHE technical framework (IHE-TF). Cross-enterprise
document sharing (XDS), one of IHE technical frameworks, is describing how to apply the standards into the
information systems for the sharing of medical documents among hospitals. This study aims to design Clinical Document
Architecture (CDA) schema based on HL7, and to apply implementation strategies of XDS using this CDA schema.
KEYWORDS: Personal digital assistants, Databases, Image compression, Picture Archiving and Communication System, Telecommunications, Internet, Visualization, Imaging systems, Mobile communications, Information fusion
The wireless mobile service with a high bit rate using CDMA-1X EVDO is now widely used in Korea. Mobile devices
are also increasingly being used as the conventional communication mechanism. We have developed a web-based
mobile system that communicates patient information and images, using CDMA-1X EVDO for emergency diagnosis. It
is composed of a Mobile web application system using the Microsoft Windows 2003 server and an internet information
service. Also, a mobile web PACS used for a database managing patient information and images was developed by
using Microsoft access 2003. A wireless mobile emergency patient information and imaging communication system is
developed by using Microsoft Visual Studio.NET, and JPEG 2000 ActiveX control for PDA phone was developed by
using the Microsoft Embedded Visual C++. Also, the CDMA-1X EVDO is used for connections between mobile web
servers and the PDA phone. This system allows fast access to the patient information database, storing both medical
images and patient information anytime and anywhere. Especially, images were compressed into a JPEG2000 format
and transmitted from a mobile web PACS inside the hospital to the radiologist using a PDA phone located outside the
hospital. Also, this system shows radiological images as well as physiological signal data, including blood pressure,
vital signs and so on, in the web browser of the PDA phone so radiologists can diagnose more effectively. Also, we
acquired good results using an RW-6100 PDA phone used in the university hospital system of the Sinchon Severance
Hospital in Korea.
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