Meyer-Ebrecht D
Aachen University of Technology, Germany.
Eur J Radiol. 1993 Jun;17(1):47-55. doi: 10.1016/0720-048x(93)90028-l.
Networks for digital image communication are an essential prerequisite for picture archiving and communication systems (PACS). The scenario of a 'filmless' radiology is based on the assumption that complete sets of medical images can be transferred throughout the hospital without a noticeable delay even though digital images represent data volumes of a thousand-fold greater size than, for example, office documents. This paper deals with an in-depth analysis of the anticipated image communication requirements in a future PACS environment. It gives a survey of technologies for data communication with emphasis on the basic concepts of established local area networks (LAN) and their limiting factors with respect to the specific PACS demands. Likewise, a description of a network particularly developed to satisfy the users-to-be of PACS systems is included. Furthermore, this paper treats the connection of image data with patients' data, i.e. the interlinking of PACS and RIS/HIS structures. Another topic of interest is the extension of the PACS structure beyond the limits of the individual hospital (extramural PACS operation). Moreover, current standardization attempts are discussed here.
数字图像通信网络是图像存档与通信系统（PACS）的一项基本前提条件。“无胶片”放射学的设想基于这样一种假设：即使数字图像所代表的数据量比例如办公文档大上千倍，整套医学图像仍可在整个医院内毫无明显延迟地传输。本文深入分析了未来PACS环境中预期的图像通信需求。它概述了数据通信技术，重点介绍了成熟的局域网（LAN）的基本概念及其在满足PACS特定需求方面的限制因素。同样，文中还描述了一种专门为满足未来PACS系统用户需求而开发的网络。此外，本文探讨了图像数据与患者数据的连接，即PACS与RIS/HIS结构的互连。另一个有趣的话题是将PACS结构扩展到单个医院范围之外（院外PACS运作）。此外，本文还讨论了当前的标准化尝试。
