PACS系统影像存储解决方案

医学图像存档与传输系统(PACS)是目前数字化医院建设的重点和难点,PACS系统需要一个高性能的影像存储系统支撑.本文分析了PACS系统影像存储的特点,介绍了分级存储机制实现对医学影像的存储管理,并比较了三种在线存储设备解决方案的优点和缺点.     

军队医院信息化建设中PACS的应用和发展前景

本文介绍了医学影像存储与传输系(PACS) 一些相关概念.并以解放军202医院的情况为例对医学影像存储与传输系统在军队医院信息化中的应用现状进行了简单介绍,最后讨论了医学影像存储与传输系统在医院信息化中的发展与前景.     

桌面安全管理系统在医院的应用体会

医院信息系统的应用极大地提高工作效率与管理质量,优化工作流程,节约患者等待的时间,方便患者就医,信息化成为现代医院的标志。随着门诊、住院医生工作站、实验室管理信息系统、医学影像存档与传输系统、电子病历系统的深入应用,医务人员对计算机的依赖性越来越强,医院信息系统一旦瘫痪,手工业务很难立即恢复,将引起医疗业务紊乱与中止,     

关于PACS系统网络传输压力的解决

随着医院信息化建设的飞速发展．在运用HIS(Hospital Information System医院信息系统)、PACS(Picture Archiving and Communaction System医学影像存档与传输系统)、RIS(Radiology Information System放射信息系统)过程中，由于多个系统共同使用网络传输数据．给网络造成巨大压力，针对此问题，和平医院根据实际情况设立了PACS分中心服务器．解决网络压力问题。     

数字化影像科组建与医院PACS临床应用

以我院数字化影像科的组建与影像存贮及传输系统(PictureArchivingandCommunicationsSystemPACS)的组建及应用,探讨数字化影像科及PACS系统的优越性。以国际通用的医学影像DICOM30接口标准,将我院影像设备联网,并与院内已建成的千兆主干网HIS(HospitalInformationSystem医院信息系统)联接,成功组建院内大型影像存档及传输系统(PACS)。数字化影像科及PACS的组建方便了我院影像资料的管理传输,且具有良好的兼容性和扩展性,提高了工作效率,节约医疗投资,降低医疗运行成本,产生了良好的经济效益和社会效益。     

医学影像归档系统在我院的实现

1　建立医学影像归档系统的意义“PACS”系统 (Picture Archiving and Comm unicationSystem)即医学影像归档及通讯系统 ,它将现代的电子计算机技术应用到医学影像的处理、存储、传输当中 ,采用数字技术将各种类型、不同型号的医学影像设备的图像信息采集并转换成统一的医学图像文件格式 ,可以普通的计算机上进行医学影像的浏览、存储、管理和传输 ,使临床医生通过医生工作站可以即时查阅医学影像信息 ,获得以往只有影像科室才能看到的医学影像资料 ,实现医学影像资源的共享 ,降低了诊断成本 ,并可实现方便且成本极低的远程会诊功能 ,提…     

Digital Scan在医学影像数字化中的应用

现代计算机及相关技术的迅速发展为医学影像的数字化处理、存储、传输提供了方便.医学影像数字化是当今医学影像技术发展的趋势和需要.对已有的传统医学影像胶片进行数字化处理是医学图像信息进入全面数字化管理系统所必须完成的工作,是为PACS和HIS系统服务.     

医学影像存档与通讯系统中存储系统分析

图像存储是医学影像存档与通信系统(PACS)设计与实现的重要组成部分。本文通过对PACS存储方面的需求分析,对其中几个关键问题:存储架构、存储技术、存储管理、数据备份与恢复等问题进行了分析,并提出相应的解决方法。     

基于Browser／Server方式的医院图像存储通信系统（PACS）

作者介绍了医院图像存档与传输系统（ＰＡＣＳ）的一种新的实现结构。与常用的体系不同，新系统利用了最新发展的Ｗｏｒｌｄ Ｗｉｄｅ Ｗｅｂ（ＷＷＷ）技术对ＰＡＣＳ进行设计，在实现系统功能的同时，大大降低了运行，维护费用，具有良好的伸缩性和扩展性，可方便地实现业务的分布式处理与代码的集中式维护。     

PACS系统在放射科的应用体会

影像存档和通讯系统(picture archiving and com-munication system,PACS)是传统放射技术和计算机技术相结合的产物,由获取、传输、存储、显示和管理数字化医学影像等几部分组成.笔者所在医院放射科在2005年组建科内PACS,将计算机X线摄影(computed radiography,CR)、数字胃肠、CT及数字减影血管造影(digital subtraction angiography,DSA)等数字化影像设备联机联网,有效地改善了工作环境.提高了影像质量和工作效率.     

Migration of Medical Image Data Archived Using Mini-PACS to Full-PACS

This study evaluated the migration to full-PACS of medical image data archived using mini-PACS at two hospitals of the Yonsei University Medical Center, Seoul, Korea. A major concern in the migration of medical data is to match the image data from the mini-PACS with the hospital OCS (Ordered Communication System). Prior to carrying out the actual migration process, the principles, methods, and anticipated results for the migration with respect to both cost and effectiveness were evaluated. Migration gateway workstations were established and a migration software tool was developed. The actual migration process was performed based on the results of several migration simulations. Our conclusions were that a migration plan should be carefully prepared and tailored to the individual hospital environment because the server system, archive media, network, OCS, and policy for data management may be unique.     

组织形态测量中的图象分析技术

医学科研和临床中的很多结论，与组织的形态变化有关。计算机图形图象技术的发展，使得组织形态的分析方法由传统的定性描述向定量分析化成为可能。本实验拟采用通用计算机组成一个显微图象分析系统，开发通用性强的分析软件，对组织和各形态完成全面，准确的定量测量。分析临床乳腺肿瘤病理切片的实验结果表明：本系统具有合理的硬件配置，基于本系统开发的分析软件不仅具有快速有效，准确灵活等特点，而且通用性好，在医学研究和临     

医学图像三维重建系统的研究进展

目前二维断层图像已无法满足临床诊疗的需求,而利用医学图像三维重建系统构建人体模型的方法可有效提高临床诊疗的效率。该综述首先对医学图像三维重建软件进行概述,然后介绍目前Mimics、3D Slicer、Simpleware及Amira这4款医学图像三维重建软件用于三维重建及辅助临床诊疗的主要功能,接着对比分析每个软件存在的优势与不足,最后总结医学图像三维重建软件辅助临床诊疗的可行性和有效性,并提出改进方法和未来展望。     

数字化全景齿科成像系统中医学图像处理软件的开发

目的开发一套数字化全景齿科成像系统专用的图像处理软件。方法借助DCMTK开发包和OpenGL开发包,用VC＋＋语言编程实现。结果本软件不但具有医学图像的显示、几何变换、平滑、锐化、窗宽窗位调节、图像测量等功能,而且具有二维图像的立体显示及三维图形的旋转功能。结论通过实验验证,本软件是一套运行稳定、相对完整的图像处理软件,可成功用于数字化全景齿科成像系统中。     

An integrated picture archiving and communications system-radiology information system in a radiological department

In this report we present an integrated picture archiving and communication system (PACS)-radiology information system (RIS) which runs as part of the daily routine in the Department of Radiology at the University of Graz. Although the PACS and the RIS have been developed independently, the two systems are interfaced to ensure a unified and consistent long-term archive. The configuration connects four computer tomography scanners (one of them situated at a distance of 1 km), a magnetic resonance imaging scanner, a digital subtraction angiography unit, an evaluation console, a diagnostic console, an image display console, an archive with two optical disk drives, and several RIS terminals. The configuration allows the routine archiving of all examinations on optical disks independent of reporting. The management of the optical disks is performed by the RIS. Images can be selected for retrieval via the RIS by using patient identification or medical criteria. A special software process (PACS-MONITOR) enables the user to survey and manage image communication, archiving, and retrieval as well as to get information about the status of the system at any time and handle the different procedures in the PACS. The system is active 24 hours a day. To make the PACS operation as independent as possible from the permanent presence of a system manager (electronic data processing expert), a rule-based expert system (OPERAS; OPERating ASsistant) is in use to localize and eliminate malfunctions that occur during routine work. The PACS-RIS reduces labor and speeds access to images within radiology and clinical departments.     

A case for automated tape in clinical imaging

Electronic archiving of radiology images over many years will require many terabytes of storage with a need for rapid retrieval of these images. As more large PACS installations are installed and implemented, a data crisis occurs. The ability to store this large amount of data using the traditional method of optical jukeboxes or online disk alone becomes an unworkable solution. The amount of floor space, number of optical jukeboxes, and off-line shelf storage required to store the images becomes unmanageable. With the recent advances in tape and tape drives, the use of tape for long term storage of PACS data has become the preferred alternative. A PACS system consisting of a centrally managed system of RAID disk, software and at the heart of the system, tape, presents a solution that for the first time solves the problems of multi-modality high end PACS, non-DICOM image, electronic medical record and ADT data storage. This paper will examine the installation of the University of Utah, Department of Radiology PACS system and the integration of automated tape archive. The tape archive is also capable of storing data other than traditional PACS data. The implementation of an automated data archive to serve the many other needs of a large hospital will also be discussed. This will include the integration of a filmless cardiology department and the backup/archival needs of a traditional MIS department. The need for high bandwidth to tape with a large RAID cache will be examined and how with an interface to a RIS pre-fetch engine, tape can be a superior solution to optical platters or other archival solutions. The data management software will be discussed in detail. The performance and cost of RAID disk cache and automated tape compared to a solution that includes optical will be examined.     

Displaying radiologic images on personal computers: Practical applications and uses

This is the fifth and final article in our series for radiologists and imaging scientists on displaying, manipulating, and analyzing radiologic images on personal computers (PCs). There are many methods of transferring radiologic images into a PC, including transfer over a network, transfer from an imaging modality storage archive, using a frame grabber in the image display console, and digitizing a radiograph or 35-mm slide. Depending on the transfer method, the image file may be an extended gray-scale contrast, 16-bit raster file or an 8-bit PC graphics file. On the PC, the image can be viewed, analyzed, enhanced, and annotated. Some specific uses and applications include making 35-mm slides, printing images for publication, making posters and handouts, facsimile (fax) transmission to referring clinicians, converting radiologic images into medical illustrations, creating a digital teaching file, and using a network to disseminate teaching material. We are distributing a 16-bit image display and analysis program for Macintosh computers, Dr Razz, taht illustrates many of the principles discussed in this review series. The program is available for no charge by anonymous file transfer protocol (ftp).     

Incorporating Out-Patient Data From CD-R Into the Local PACS Using DICOM Worklist Features

With the introduction of digital imaging in radiology, CD-Rs are increasingly used to distribute patient materials. This study investigates the application of a new software package and work protocol to integrate out-hospital data into the local PACS (picture archive and communication system) archive, which is hampered by differences in patient numbers. A one-month trial was started to import CD-Rs from two departments (radiotherapy and radiology). Seventy CD-Rs were collected from 20 different hospitals holding data of eight different modality types and published by eight different software packages from different vendors. All CD-Rs were successfully transferred into the PACS. The new software and work protocol provide an easy way of introducing the out-hospital data into the PACS. CD-Rs can be destroyed after transfer to PACS, eliminating physical storage. Furthermore, all data can now be viewed and reported using the default viewers of the hospital and no additional training of staff is required.     

基于linux平台的医学影像软件系统设计与应用

背景：随着VTK和ITK两个软件开发包的研制成功,医学影像领域内的研究人员越来越重视本领域内的软件开发问题。 目的：开发一种结合VTK和ITK的医学影像软件系统。 方法：首先对可视化软件包和图像处理包整合,进而基于整合框架对体数据进行处理、同步可视化和测量分析,最后结合病历信息与医学影像分析数据建立管理系统,在linux平台上对该软件系统进行了实现,利用上气道CT体数据对系统进行了测试。 结果与结论：该系统能够结合VTK和ITK对体数据进行可视化和图像处理,基于MySQL数据库对病历信息和医学影像数据进行合理管理,体积、长度等测量精度都在1%之内。     

M3D:面向3D打印的医学图像重建平台

本研究旨在构建面向3D打印的医学图像3D重建平台,实现医学影像数据的目标分割、3D重建与3D打印所需区域裁剪与输出功能。该软件平台采用Qt设计用户界面,调用ITK、VTK类库处理医学影像数据。软件平台实现了医学影像数据的输入输出及处理、分割与3D重建等功能;在3D打印模型输出前,可实现对感兴趣区域的截取。以肘关节为例,利用该平台可实现模型重建,截取区域输出STL文件并完成3D打印。结果表明,该软件平台操作简单、界面简洁,可以从医学影像数据中重建得到3D模型,并进行3D打印,具有重要的临床应用价值。