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At least 451 records · Page 25Linked to original sources
PubMed2004

Location-aware access to hospital information and services.

Hospital workers are highly mobile; they are constantly changing location to perform their daily work, which includes visiting patients, locating resources, such as medical records, or consulting with other specialists. The information required by these specialists is highly dependent on their location. Access to a patient's laboratory results might be more relevant when the physician is near the patient's bed and not elsewhere. We describe a location-aware medical information system that was developed to provide access to resources such as patient's records or the location of a medical specialist, based on the user's location. The system is based on a handheld computer which includes a trained backpropagation neural-network used to estimate the user's location and a client to access information from the hospital information system that is relevant to the user's current location.

Algorithms↗
PubMed1990

Teleradiology: an assessment.

A teleradiology system acquires radiographic images at one location and transmits them to one or more remote sites, where they are displayed and/or converted to hard copy. These systems often employ wide area networks. Their goal is to provide improved radiologic services at all sites on the network. Experience in the use of teleradiology systems has demonstrated the need for a laser film digitizer, an optical disk, and a high-quality display and/or laser film printer at each site. Single-site hardware purchase costs average $196,000, plus an additional 20% for yearly network services. Hardware purchased for a consultation or central referral facility approximates $344,000.

Computer Communication Networks↗
PubMed2002

Implementation and integration of regional health care data networks in the Hellenic National Health Service.

BACKGROUND: Modern health care is provided with close cooperation among many different institutions and professionals, using their specialized expertise in a common effort to deliver best-quality and, at the same time, cost-effective services. Within this context of the growing need for information exchange, the demand for realization of data networks interconnecting various health care institutions at a regional level, as well as a national level, has become a practical necessity. OBJECTIVES: To present the technical solution that is under consideration for implementing and interconnecting regional health care data networks in the Hellenic National Health System. METHODS: The most critical requirements for deploying such a regional health care data network were identified as: fast implementation, security, quality of service, availability, performance, and technical support. RESULTS: The solution proposed is the use of proper virtual private network technologies for implementing functionally-interconnected regional health care data networks. CONCLUSIONS: The regional health care data network is considered to be a critical infrastructure for further development and penetration of information and communication technologies in the Hellenic National Health System. Therefore, a technical approach was planned, in order to have a fast cost-effective implementation, conforming to certain specifications.

Computer Communication Networks↗
PubMed1994

[Networks for image communication. Current status].

Networks for the transport of digital images are key components of PACS systems. In order to create a platform for the selection of appropriate network technology, first the quantitative requirements for image data communication in a PACS system are analyzed. State-of-the-art local area networks as well as developments in progress are mentioned, and their performance is discussed with respect to the PACS requirements. Furthermore, the linkage of PACS systems and hospital or radiology information systems is discussed. Finally, a scenario is outlined for extra-mural applications of medical image communication.

Computer Communication Networks↗
PubMed2003

Software objects in distributed flow measurements.

Increasing complexity of the contemporary industrial measurement systems is a common characteristic. Partitioning of the measurement process into software components that can be realized as separate objects facilitates the development of the measurement system. Using a client/server approach, the measurement system components become shareable and accessible across the network. The components can be deployed anywhere on the network and shared by a considerable number of applications. The paper describes a realization of the flow measurement system with distributed software components, i.e., measurement procedures, which include the concurrent calculation of the measurement results and the corresponding uncertainties.

Computer Communication Networks↗
PubMed1999

Electronic consultations and referrals in Kymenlaakso Hospital District.

The meaning of this paper is to introduce the medical network which has been taken to Kymenlaakso Hospital District and the primary experiences in utilizing. Actual numeral results are not ready because of short time. First results will be ready in August 1999.

Computer Communication Networks↗
PubMed1992

Fulfilling the promise: implementing IAIMS at Georgetown University.

Predictions are that the integration of multiple information systems of a medical center will change the way doctors work and practice medicine in the future. Several major steps must be taken by an institution to make this a reality. The IAIMS program sponsored by the NLM is designed to achieve integration of resources in the medical center environment. The purpose of the IAIMS project at Georgetown is to develop a medical decision support system by bringing together multiple sources of information that reside on disparate computers and different database systems. This immense and complex task is described in this paper from an organizational, academic and technical perspective. Georgetown is developing a Biotechnology and Biomedical Knowledge Network which includes several informational and clinical databases, a variety of scholar workstations, instruction on use of computers, a campus-wide network with local area network nodes and a modular approach to systems integration. The IAIMS project is spearheaded by the medical library which has enabled a broad body of medical center users to benefit directly from new, dynamic services.

Academic Medical Centers↗
PubMed2000

Architecture for networked electronic patient record systems.

There have been two major approaches to the development of networked electronic patient record (EPR) architecture. One uses object-oriented methodologies for constructing the model, which include the GEHR project, Synapses, HL7 RIM and so on. The second approach uses document-oriented methodologies, as applied in examples of HL7 PRA. It is practically beneficial to take the advantages of both approaches and to add solution technologies for network security such as PKI. In recognition of the similarity with electronic commerce, a certificate authority as a trusted third party will be organised for establishing networked EPR system. This paper describes a Japanese functional model that has been developed, and proposes a document-object-oriented architecture, which is-compared with other existing models.

Computer Communication Networks↗
PubMed2004

[Status of NIHS Computer Network System (NIHS-NET)].

We described the development of National Institute of Health Sciences Computer Network System (NIHS-NET), which was named NIHS Information and Computing Infrastructure (NICI) previously. In the system, the main server machines and common machines were replaced and the network lines were upgraded from 100 Mbps to 1Gbps. The connection nodes were changed from Inter Ministry Network (IMnet) to Science Information Network (SINET), and the dedicated lines between NIHS (yoga, osaka, tsukuba) and SINET were constructed. The Internet connection speed from each campus to SINET was upgraded. We also performed security audit in this system.

Computer Communication Networks↗
PubMed1993

An imaging standard for dentistry. Extension of the radiology DICOM standard.

No standard exists for electronic communication of dental images. However, maxillofacial radiology, being part of general radiology, does have the advantage of having an applicable standard: The American College of Radiology-National Electrical Manufacturers Association Standard for Digital Imaging and Communications in Medicine (Version 3.0). This standard encourages open systems interconnection of imaging equipment over standard networks while maintaining compatibility with earlier point-to-point connection standards. This standard, to be voted on in 1993, moves the American College of Radiology-National Electrical Manufacturers Association into full conformance with the International Standards Organization reference model for network communications. An object-oriented information model lays the groundwork for harmonization with other medical communications standards. This article outlines the American College of Radiology-National Electrical Manufacturers Association components and discusses the rationale of object-oriented design. The relevance of the standard to dentistry is discussed.

Computer Communication Networks↗
PubMedDate not supplied

A distributed and interactive three-dimensional medical image system.

Three-dimensional (3D) arrays of digital data representing spatial volumes arise in many scientific applications, such as computed tomography (CT) and magnetic resonance imaging (MRI) created by imaging a series of cross sections of human bodies in medical applications. In this article, a software system architecture, called DISCOVER (a Distributed Interactive Scientific COmputing and Visualization EnviRonment), which can take advantage of the power of parallel processing, is proposed and implemented for interactive visualization and manipulation of the 3D digital data. The surface-rendering and the volume-rendering algorithms are implemented. The same software program can be executed on several different hardware platforms. We also propose a new rendering algorithm, called volume-surface rendering, for medical applications. The algorithm enables users to visualize the external and internal structures of medical objects simultaneously. The network version of the DISCOVER, as it stands today, is in practical use in the Hospital of National Cheng Kung University in Taiwan for real clinical applications.

Algorithms↗
PubMed2006

Advanced visualization platform for surgical operating room coordination: distributed video board system.

One of the major challenges for day-of-surgery operating room coordination is accurate and timely situation awareness. Distributed and secure real-time status information is key to addressing these challenges. This article reports on the design and implementation of a passive status monitoring system in a 19-room surgical suite of a major academic medical center. Key design requirements considered included integrated real-time operating room status display, access control, security, and network impact. The system used live operating room video images and patient vital signs obtained through monitors to automatically update events and operating room status. Images were presented on a "need-to-know" basis, and access was controlled by identification badge authorization. The system delivered reliable real-time operating room images and status with acceptable network impact. Operating room status was visualized at 4 separate locations and was used continuously by clinicians and operating room service providers to coordinate operating room activities.

Computer Communication Networks↗
PubMed1995

Security management in the healthcare environment.

Modern health care establishments increasingly rely on information systems in all aspects of work; any compromise of their security may represent a significant threat to both the organization and the patient. This paper discusses the increasing need for standardized levels of protection in health care computing systems and networks, outlining steps that have been taken to achieve this within European establishments. The paper then considers specific technical concepts that may be applied to improve security in health care at both local and international levels.

Algorithms↗
PubMed1996

[Use of an image serve for external communication in a radiologic department].

UNLABELLED: In radiology picture information is increasingly acquired digitally. Image postprocessing is sometimes carried out via the picture archiving and communication system (PACS). In this paper we present a strategy for the simple implementation of an external picture communication system. METHODS: Image transfer for the entire radiology department is carried out through a single image server, which physically and logically separates the PACS from the external network. The server is organized as an image mailbox system. For each user the images can be transferred to their respective mailbox from the radiology department. However, direct access to the image archive is prevented by the system. RESULTS: Because the networks are separate, a high degree of access security is guaranteed. New users can easily be added to the server without additional configuration of the PACS. System usage has received wide acceptance within the department and with external users. CONCLUSIONS: The integration of an image server into a PACS has proved to be non-problematic. The concept allows for more effective information sharing in the field of teleradiology.

Computer Communication Networks↗
PubMedDate not supplied

Approaching equity in consumer health information delivery: NetWellness.

The growing public interest in health and wellness information stems from many sources, including social changes related to consumers' rights and women's health movements, and economic changes brought about by the managed health care revolution. Public, hospital, and medical center libraries have been ill-equipped to meet the increasing need for consumer-oriented materials, even though a few notable programs have been established. The "Information Superhighway" could be an effective tool for sharing health information if access to telecomputing equipment and training were available to those with an information need. The University of Cincinnati Medical Center, with its libraries in the leading role, is delivering NetWellness, an electronic consumer health library service, to residents of 29 counties in three midwestern states. Users connect directly through the Internet, through regional Free-Nets, and by visiting one of 43 public access sites where networked workstations have been installed. The continued success of the project depends on developing partnerships, providing quality content and maintaining fair access.

Community-Institutional Relations↗
PubMed2004

TCP-Rab: a receiver advertisement based TCP protocol.

With the evolution of network technologies, the deficiencies of TCP protocol are becoming more and more distinct. The new TCP implementation, called Receiver Advertisement Based TCP (TCP-Rab) proposed here to eliminate these deficiencies, adopts two basic mechanisms: (1) Bandwidth Estimation and (2) Immediate Recovery. Bandwidth estimation is carried out at the receiver, and the result is sent back to the sender via the acknowledgements. Immediate Recovery guarantees high performance even in lossy link. Rab can distinguish the reason for packet loss, and thus adopt appropriate recovery strategy. For loss by network congestion, it will back off its congestion window, and for loss by link errors, it will recover the congestion window immediately. Simulations indicated that Rab has superiority over other TCP implementations.

Algorithms↗
PubMed1989

Collaborative efforts for successful local area networks.

This article describes the collaborative efforts that enable members of a computer task force and working subgroups to interact and achieve the successful addition of computer systems to the local area network at a 534-bed community hospital and regional medical center in the southeastern United States. The authors focus on the process that must occur from analysis through evaluation when an ancillary department is automated.

Academic Medical Centers↗
PubMed1993

Expanding the DOCLINE network to include nonmedical libraries in the state of Nevada.

Most libraries cannot meet patron demands for biomedical information using only their in-house collections. Consequently, many types of libraries request biomedical information through interlibrary loan, and these include not only academic health sciences libraries, hospital and special libraries, but also general libraries. In Nevada, with its small population spread over a large geographic area, it has become critical to develop a statewide network for sharing biomedical information. As the state resource library, the Savitt Medical Library launched an effort to establish a network, via DOCLINE, of all Nevada libraries that have health-related collections. The process of convincing academic and community college libraries to join DOCLINE and the resulting benefits of improved resource sharing and cooperative collection development are discussed.

Computer Communication Networks↗