基于Web的DICOM标准医学影像浏览方法的实现

提出基于Web的DICOM标准医学影像在线浏览及其实现的解决方案,阐述B/S模式支持DICOM医学影像在线浏览的Web端应用中间件的设计,以解决远程医疗和医学信息共享平台的医学影像应用问题。     

GY-2 PACS中DICOM网关的设计与实现

DICOM协议是医学影像系统PACS中被广泛采用的标准,但目前医学图像数据源中很多是非DICOM标准的。文章结合广州医学院附属第二医院PACS实践经验,设计并实现了DICOM网关,将非DICOM图像融入PACS中,对于PACS的实现具有重要的意义。     

DICOM文件剖析及读取设计

随着数字成像技术的高速发展,医学成像设备层出不穷。DICOM标准在这些医学设备上的应用,实现不同厂家不同类型的数字成像设备之间的通信,它涵盖医学图像和通信。医学影像存储与通信系统（PACS）正是依赖于此标准,对DICOM标准的学习是开发PACS的首要任务。     

PACS与HIS系统集成的研究与实现

文章提出创建DICOM/HL7网关的方法实现医学影像归档与通信系统与医院信息系统的集成。通过设计消息的发送/接收机制和消息的构建/解析算法,实现了HIS和PACS之间的信息交换。DICOM/HL7网关的实现很好地解决了PACS与HIS系统集成的瓶颈问题。     

PACS系统中的DICOM标准概述

医学数字图像通讯标准DICOM(DigitalImagingandCommunicationinMedicine)是医学信息学领域中正在广泛使用的工业标准,DICOM正在成为医院医学影像存档与通讯系统PACS(PictureArchivingandcommunicationSystem)事实上的国际标准。在国际上,已广泛地应用于各医学成像设备及PACS、RIS/HIS等信息系统的网络互联中。本文简要叙述了DICOM标准的组成部分,及其DICOM的特点、意义和运行机制。     

基于PACS和宽带网的远程医疗信息共享平台研究

本文探讨了一种基于PACS和宽带网的远程医疗信息共享平台,着重研究了医学影像数据存储中心的建设,不同HIS系统间异构数据源共享等关键技术和基于医疗信息共享平台的远程医疗应用,这对于推动我国远程医疗事业的发展和医院信息化工作的推进都具有重要意义.     

基于智能手机的移动医学影像系统的设计

笔者以医学数字成像和通信(DigitalImagingandCommunicationsinMedicine,DICOM)为标准,构建了基于智能手机安卓系统的移动医学影像系统。通过开发平台的合理选择,依次设计了用户管理、患者信息管理、远程诊断、文本信息提取及图像显示等模块。通过对移动PACS软件功能予以测试,结果证实其能够提供医学影像可视化数据和清晰图像,便于在智能手机上交互显示,具有较高的推广价值。     

远程医疗会诊在医学信息共享平台的运用

基于PACS和宽带网的远程医疗信息共享平台是一种能够实现海量存储设备资源共享和不同医院间HIS与HIS、PACS与HIS等异构数据源的连接的信息共享系统。本文介绍基于远程医学信息共享平台的会诊形式创新研究以及实现方法。     

基于DICOM的数据组织及医学图像序列提取方法研究

DICOM标准是应用在PACS系统中的一个医学数字成像和通信的国际标准,文章在深入研究DICOM标准的基础上,结合在实际中开发PACS系统的相关经验,对基于DICOM的数据组织层次进行了较为深入的分析,给出了提取DICOM文件中相关属性信息并解析分离图像数据信息的一般方法,最终提取出基于DICOM标准的医学图像序列。     

基于本体的DICOM医学图像检索

当前的一些医学图像存档和通讯系统（PACS）中对图像的检索只能通过与图像本身无关的信息来进行检索,不能基于图像语义检索。本文应用本体的概念来描述DICOM医学图像,提出了医学图像本体的框架,对DICOM信息模型进行了扩展。     

数字化医院的网络安全问题及对策探究

数字化管理和一流的医疗设备是医院现代化的两个主要组成部分,通过计算机网络,PACS系统实现了各类医疗图像信息的集中管理和共享,HIS系统则把医院的事务管理和医疗业务进行信息化管理,计算机网络和数字化管理在医院中的作用显得日益重要。为加强网络管理,保障数字化、信息化管理的安全,本文在分析医院信息网络安全所面临问题的基础上,探讨了解决计算机病毒、信息系统崩溃、数据遗失等问题的措施。     

医学图像网格基于语义的信息集成方法

提出了一种医学图像网格MedImGrid(medical image grid)基于语义的信息集成方法.基于HL7 RIM(health level 7 referenced information model)生成父本体(HL7-RIM ontology),采用混合方式(hybrid means)建立MedImGrid全局和局部本体的分级结构.结合代理和中间件技术开发了HL7(health level 7) Grid中间件,实现了具有医疗语义解析功能的HL7智能代理,以支持对异构数据源的Grid Service封装与统一访问.基于本体标记表达异构数据模式的语义模型在本体层的相关关联,参照MedImGrid各级本体实现数据源间的语义解析和映射.MedImGrid原型系统基于CGSP2(China grid support platform v2.0),采用了局部与全局语义映射松耦合的构架,其特有的层次结构使得网格环境下跨系统/医院的信息集成更加有效.     

Realization of integration and working procedure on digital hospital information system

The integrating method and working procedure of a digital hospital information system were discussed in this paper. It adopts a unique modularized structure that allows interplatform data exchange among different hospital information systems (HIS, RIS and PACS) through the seamless integration of the above-mentioned three systems according to the international standards (DICOM, HL7 and TC251). The realization of communication interface standardization, function modularisation, common sharing of medical information resources and adaptation to local circumstances enables the system function, management function, information processing and communication function to be achieved on a complete platform, which provides such advantages as common sharing, openness, security, extensibility and simple operation, and offers completeness to present hospital management and future medical environment. Currently, it is being successfully applied at many hospitals in China such as the 5th People Hospital of Zhengzhou City to realize the digitized, network-dependent and film-independent modern hospital management.     

基于CORBA的异构数据库访问中间件的研究与实现

目前,中间件在解决异构平台的通信问题上的应用变得越来越多,针对同一单位不同部门之间信息要求共享,并且充分利用现有的数据库资源的需求,提出了一种基于XML技术和公共对象请求代理体系CORBA中间件技术的异构数据库中间件查询系统,该系统使用XML技术定义统一的命令请求格式,运用CORBA的分布式技术对异构数据库进行访问操作,模拟实验具有可移植、性价比高、易操作的特点,适合于中小型企业。     

实现医学影象存档和传输系统中的若干关键技术

ＰＡＣＳ的重要性已被人们所认识,并且其技术在近１５ａ中得到了迅速发展。但是,实现ＰＡＣＳ仍然还有很多问题有待于解决。该文通过大量有关文献研究,指出并分析了实现ＰＡＣＳ过程中涉及到的关键技术,特别是对国际医学影象通信标准的内容进行了介绍;讨论了系统中有关影象存档和处理显示功能的软件设计方法;分析了常用的大容量影象数据存储方式,并给出了国内目前可行的解决方案。最后指出,为了跟上国际医学信息技术的发展潮     

A service composition oriented framework for configuring SMeet multiparty collaboration environments

To enable remote collaboration among knowledge workers, there has been extensive research about prototyping network-based multiparty collaboration environments. Particularly, it is necessary to solve the configuration difficulties that arise from different settings of various tools in traditional room-based collaboration systems. To ease these difficulties, in this paper, we design a service composition oriented framework for the SMeet (Smart Meeting Space) multiparty collaboration environments by following the SOA (service oriented architecture) design principles. The proposed framework aims to facilitate the flexible configuration of diverse networked devices and associated application tools for successful multiparty collaboration. According to a pre-defined template, it helps the operators and users to compose services that are dispersed across remote sites. By leveraging open-source agent middleware, we also develop a SMeet toolkit with GUIs (graphical user interfaces) to assist the easily-configurable realization of SMeet multiparty collaboration environments. The developed SMeet toolkit is utilized to realize a remote collaboration scenario between two SMeet prototype sites, by enabling the network-based interactive sharing of HD-quality media on networked tiled displays (NeTDs).     

Context- and social-aware middleware for opportunistic networks

Opportunistic networks are multi-hop ad hoc networks in which nodes opportunistically exploit any pair-wise contact to share and forward content, without requiring any pre-existing Internet infrastructure. Opportunistic networks tolerate partitions, long disconnections, and topology instability in general. In this challenging environment, leveraging users’ mobility represents the most effective way to deliver content to interested users. In this paper we propose a context- and social-aware middleware that autonomically learns context and social information on the users of the network, and that uses this information in order to predict users’ future movements. In order to evaluate the proposed middleware on a realistic scenario, we have designed and implemented a context- and social-aware content sharing service, exploiting the functionality of the middleware. Both the middleware and the content sharing service have been integrated with an existing data-centric architecture (the Haggle architecture) for opportunistic networks. Finally, we have validated the proposed content sharing application on a small-scale testbed and, on a larger scale, we have investigated the advantages provided by context- and social-aware sharing strategies by means of extensive simulations. The main result of this paper is the definition and implementation of a context- and social-aware middleware able to share context information with all the interested components improving the efficiency and performances of services and protocols in opportunistic networks. With respect to content sharing strategies that do not exploit context and social information, we have obtained up to 200% improvements in terms of hit rate (probability that users receive the content they request) and 99% reduction in resource consumption in terms of traffic generated on the network.     

Planning for PACS at Osaka University Hospital.

We have a plan to adopt PACS as a medical image information system in the new hospital. In order to construct PACS suitable for our hospital, a preliminary survey was carried out to determine how PACS should be introduced and what are the physicians requirements for a new medical image system. The most important requirement of the physicians was a good quality workstation. Our plan of a new medical image information system is as follows. A primary database will be constructed according to each of modalities in the Department of Radiology. In the Department of Medical Information Science, we will make a secondary database according to the patient. Although it may be difficult for us to obtain a sufficient budget digitalizing all medical images by our move to the new hospital, our goal is to establish total PACS throughout the new hospital in 1995.     

基于联盟链的电子健康记录隐私保护和共享

医院正在逐渐采用电子健康记录(EHR)的方式去记录患者的医疗信息。然而,医疗数据的隐私性和EHR标准的差异化阻碍了医疗数据在病人和医院之间的共享。因此,针对隐私信息泄露和难于共享的问题,提出了一个基于联盟链的隐私保护数据共享模型。此外,基于匿名算法提出了(p,α,k)匿名隐私算法,能够解决EHR隐私信息泄露的问题。通过理论分析和实验证明,提出的基于联盟链和(p,α,k)隐私匿名算法模型能够在保护数据隐私的前提下,实现病人和医院之间的数据安全共享。对比前人的模型,该模型具有所需节点少、减少主链压力、容错性强和病人对EHR完全控制等优势。     

Medical Chain:联盟式医疗区块链系统

医疗数据共享、防篡改、防泄漏一直是困扰医疗行业的难题.一位患者在转诊时,往往无法提供以往的就诊信息,原因在于国内各医院医疗信息大多数情况下无法共享,而仅能通过病历、检验单等极易丢失的纸质信息来实现一部分医疗信息的共享.同时,患者的医疗信息极易造成泄露,在出现医疗纠纷时所提供的医疗信息也无法保证真实性与公正性.本文设计了一个基于实用拜占庭容错算法（Practical Byzantine fault tolerance,PBFT）的联盟式医疗区块链系统,该系统是一个多节点共同维护与共享的,并且能够防止医疗数据被篡改、泄露的医疗系统,可用来解决这些医疗难题.与现有医疗区块链系统相比,本系统具有一定的优越性与较好的适用性.