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At least 19 recordsLinked to original sources
PubMed1988

Local area networks for radiology.

This article is a tutorial on local area networks (LAN) for radiology applications. LANs are being implemented in radiology departments for the management of text and images, replacing the inflexible point-to-point wiring between two devices (computer-to-terminal). These networks enable the sharing of computers and computer devices, reduce equipment costs, and provide improved reliability. Any LAN must include items from the following four categories: transmission medium, topology, data transmission mode, and access protocol. Media for local area networks are twisted pair, coaxial, and optical fiber cables. The topology of these networks include the star, ring, bus, tree, and circuit-switching. Data transmission modes are either analog signals or digital signals. Access protocol methods include the broadcast bus system and the ring system. A performance measurement for a LAN is the throughput rate as a function of the number of active computer nodes. Standards for LANs help to ensure that products purchased from multiple manufacturers will operate successfully.

Humans↗
PubMed1992

PACS mini refresher course. Local area network topologies, media, and routing.

Picture archiving and communication systems (PACS) use local area networks (LANs) for the transfer of images and image-related data. There are several aspects of LANs that are used to describe and categorize them: topology, the media used for transmission, and the medium access control (MAC) protocols. The four basic topologies are the bus, tree, ring, and star; the four primary types of media used for LANs include coaxial cable, twisted-pair wire, fiberoptic cables, and wireless. The wireless LANs that use infrared and radio frequencies are new but promising. Of the three MACs presently being used--Ethernet, fiber distributed data interface (FDDI), and UltraNet--Ethernet is the most common. LANs can be interconnected by means of the repeater, bridge, router, and gateway internetworking devices. The future of LAN development lies in increased standardization and increased connectivity in order to make teleradiology a reality.

Local Area Networks↗
PubMed1991

Implementation of a local area network for nursing management.

This paper describes the planning and implementation of a Local Area Network (LAN) for the nursing service of a 504-bed urban teaching hospital. The major goals of the network were: support for nurse executives, nurse managers, and the departmental assistants assigned to administrative offices; increased efficiency and effectiveness of the nursing administrative areas; and improved communication systems. Collaboration between the nursing service and the Computer Information Center (CIC) resulted in a network of over 70 workstations, spanning 11 buildings. The network provides access to multiple programs that support clinical, managerial, and research activities. Gateways provide access to the hospital's two mainframes.

Boston↗
PubMed1987

Microcomputer-based local area network system for controlling information on perinatal medicine.

We present an outline of our microcomputer-based Local Area Network (LAN) system designed to process information related to perinatal events. This system enables any of the medical personnel to use a microcomputer terminal installed at the bedside and also to process, in a real-time manner, new input-information together with past information, thereby correlating the processing of medical information to actual clinical care. In addition, using the utility subsystem, a more desired form of data-output can be substituted for conventional hand-prepared clinical charts. Over a 3-month test period for clinical use, it became evident that this could serve as a suitable prototype system capable of covering the entire scope of information required by perinatologists. This system also enables any form of statistical assessment to be made of events, such as calculating the perinatal mortality rate and the incidence of preeclampsia. Problems arising from the clinical application of this system are given immediate attention and appropriate steps taken.

Computer Systems↗
PubMed1991

A local area network for medical research; planning, realization and experience.

This report focuses on the planning and realization of an interdisciplinary local area network (LAN) for medical research at the University of Heidelberg. After a detailed requirements analysis, several networks were evaluated by means of a test installation, and a cost-performance analysis was carried out. At present, the LAN connects 45 (IBM-compatible) PCs, several heterogeneous mainframes (IBM, DEC and Siemens) and provides access to the public X.25 network and to wide-area networks for research (EARN, BITNET). The network supports application software that is frequently needed in medical research (word processing, statistics, graphics, literature databases and services, etc.). Compliance with existing "official" (e.g., IEEE 802.3) and "de facto" standards (e.g., PostScript) was considered to be extremely important for the selection of both hardware and software. Customized programs were developed to improve access control, user interface and on-line help. Wide acceptance of the LAN was achieved through extensive education and maintenance facilities, e.g., teaching courses, customized manuals and a hotline service. Since requirements of clinical routine differ substantially from medical research needs, two separate networks (with a gateway in between) are proposed as a solution to optimally satisfy the users' demands.

Costs and Cost Analysis↗
PubMed1989

A 2-year assessment of a microcomputer based local-area network system for managing perinatal medical information.

Based on a 2-year experience using a perinatal information system and a microcomputer-based local area network (LAN), we assessed the LAN system to see how it provided positive feedback in daily perinatal practice. Discussed herein are the results pertaining to the compatibility between data on conventional patient's charts and that input into the computer system, along with a review of the data-base acquired, containing a large quantity of perinatal medical information.

Computer Systems↗
PubMed1988

Assessment of local area network based on the microcomputer system for data processing of perinatal medical information.

In order to control perinatal medical information, we developed a microcomputer-based local area network. This system has been in practical operation since June, 1986. We have assessed this system with regard to both patient-machine and doctor-machine interfaces. Consequently, although input operation took 20-30% longer per individual patient than before, it was more feasible for medical staff to access and retrieve the data in a real-time manner. When tested in a ten month period, this system was found to be a prototype applicable for further extending the management of the entire scope of perinatal medical information.

Computer Systems↗
PubMed1986

Local area networks in an imaging environment.

There is great interest at present in incorporating image-management systems popularly referred to as picture archiving and communication systems (PACS) into imaging departments. This paper will describe various aspects of local area networks (LANs) for medical images and will give a definition of terms and classification of devices by describing a possible system which links various digital image sources through a high-speed data link and a common image format, allows for viewing and processing of all images produced within the complex, and eliminates the transport of films. The status of standards governing LAN and particularly PACS systems along with a proposed image exchange format will be given. Prototype systems, particularly a system for nuclear medicine images, will be presented, as well as the prospects for the immediate future in terms of installations started and commercial products available. A survey of the many questions that arise in the development of a PACS for medical images and also a survey of the presently suggested/adopted answers will be given.

Archives↗
PubMed1991

A local area network for controlling the ordering and purchasing of radioactive material.

Efficient control over the purchase and receipt of radioactive material is a necessary part of any radiation safety program. We describe a novel computerized method for monitoring the flow of radioactive material within a large broad-licensed medical research complex. The Local Area Network (LAN) described interfaces the radiation safety office with radionuclide receiving, the authorized user, grants and contracts, special accounts, and purchasing. Task-specific software enables the authorized user to place an order and allows the monitoring of possession/ordering limits, personnel, date of order, and time of receipt via the screen. The resultant data base is easily annexed for specific information. The system is user-friendly and adaptable to any set of circumstances.

Academic Medical Centers↗
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↗
PubMed1992

Grateful Med on an institutional local area network.

Grateful Med version 6.0 provides new features very desirable to network users. These include: a single copy of the application resident on a server providing access to many users; a new communications architecture which provides access to Medline via the Internet or local network modems; additional scripting capabilities allowing local customization. These new features reduce the overhead in installing and maintaining Grateful Med (GM), allow much quicker downloading of citations and abstracts from Medline, and remove the requirement of a local modem for each PC accessing Medline.

Grateful Med↗
PubMed1991

Digital imaging in the radiation oncology environment: a personal computer local area network solution.

Personal computer (PC) driven digital imaging devices are now becoming available in the market place for use in radiation oncology to produce what are known as real time portal images. These limited contrast images are used to verify the patient anatomy under treatment by megavoltage x-rays and are a vital part of the patient treatment. The current generation of devices can produce both single and movie loop images in real time for physician review and approval. To disseminate these images and other digital images used in the planning and delivery of radiation therapy, a PC-based picture archiving and communications system has been developed that is tailored to the special needs of radiation oncology.

Humans↗