医学影像存储与传输系统中影像数据流的管理及其实现方式

The management and realizing of image data flow in PACS

目的 探讨医学影像存储与传输系统 (PACS)影像数据流程的管理模式和实现过程。方法 作者医院PACS经过 2期建设完成了全数字化改造 ,所有影像设备均已接入PACS系统。系统采用中央存储管理模式 ,并通过对系统工作流和影像数据流的控制和管理 ,提高了影像诊断执行过程的系统响应速率。作者将着重基于全数字化改造后PACS影像流程运行环境和管理模式 ,分析影像数据流程类型、过程及实现方式。结果 作者医院PACS系统影像数据流程管理主要涉及 2类 :影像归档存储过程和影像转存 (forward)过程。前者采用集中管理模式 ,对不同的影像类型根据诊断过程的需求采用各异的归档存储时间表 ,如CT、MR等影像类型执行集中一次性存档 ,而对需要立即完成诊断过程的常规X线影像则执行即刻归档存储操作 ;后者通过PACS中央管理服务器上运行的工作流管理软件实现 ,即对完成归档存储的影像 ,通过自动路由的过程将其进一步送往具体实施诊断过程的部门和位置。结论 影像数据流管理是影响PACS系统功能执行效率的关键因素 ,应根据用户特定的运行环境。

Objective To explore the management model and realizing of PACS image data flow. Methods Based on the implementing environment and management model of PACS image data flow after full digital reengineering for radiology department in Shanghai First Hospital was completed, analysis on image data flow types, procedure, and achieving pattern were conducted. Results Two kinds of image data flow management were set up for the PACS of Shanghai First Hospital, which included image archiving procedure and image forward procedure. The former was implemented with central management model while the latter was achieved with a program that functionally acted as workflow management running on the central server. Conclusion The image data flow management pattern, as a key factor for PACS, has to be designed and implemented functionally and effectively depending on the performance environment, the tasks and requirements specified to particular user.