网络DICOM课件

,单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Network / DICOM,TCP/IP,网络结构,DICOM3.0,概论,PACS/RIS/HIS,DICOM规格是一种电脑医学影像的通讯规格，它开展的主要目的，是为了要让医院中各色各样的医学影像仪器和软体间能够有一个共通的语言，以塑造一个无国界、无障碍的电脑化医学影像环境。,OSI layer model,(1),O,pen,S,ystems,I,nterconnection,OSI,is defined as a model of 7 layered network protocol architecture by ISO.,1.,Application,layer,2.,Presentation,layer,3.,Session,layer,4.,Transport,layer,5.,Network,layer,6.,Data Link,layer,7.,Physical,layer,manages addresses on network.,translates between Application layer and Session layer.,provides service.,manages virtual connection (establishing / releasing).,performs data compression, correction or so on.,establishes physical communication line.,defines hardware characteristics and requirements.,Computer Network,Ether Net,10,BASE-T,100BASE-TX,Almost same as,internet / intranet,connection,Physical definition,TCP/IP,Communication Protocol,DICOM,Communication Application,/,DICOM,DICOM,communication runs on computer network.,OSI layer model,(2),O,pen,S,ystems,I,nterconnection,on,DICOM,communication,1.,Application,layer,2.,Presentation,layer,3.,Session,layer,4.,Transport,layer,5.,Network,layer,6.,Data Link,layer,7.,Physical,layer,Ether Net,( 10BASE-T / 100BASE-TX ),DICOM,application level communication,TCP/IP,communication,( IP address / port number ),Subnet,172.16.2.x,Subnet,172.16.1.x,Computer Network,TCP/IP,(1),To define each computer,“hostname,“IP address and “Subnet Mask are required.,Fuji-deskpc1,Fuji-notepc2,Miya-deskpc1,Miya-deskpc2,Miya-notepc3,Relation between IP address & Subnet Mask,10101100. 0001000.00000001. 0001100,Masked part shows,subnet,.,Unmasked part shows client address.,DICOM,Network,To define each SCP/SCU,“AE Title(*1) is required.,(*1) Application Entity Title,DRYPIXlink1,(SCU),Fujiprinter1,(SCP),CRconsole1,(SCU),Fujiprinter2,(SCP),DRYPIXlink2,(SCU),As the result, 5 items are required on each client.,For computer network.,Hostname,independent for each client,IP address,independent for each client,Subnet Mask,common for each client,Port Number,common for each client,For,DICOM,application.,AE Title,.,DICOM,历史、现在、将来趋势,1983年，ACR-NEMA委员会成立,专注于成像设备间互连接口,1985年ACR-NEMA1.0推出RSNA,1988年ACR-NEMA2.0推出,ACR-NEMA标准主要约定医学图像格式,50针直接连线通信接口专用,DICOM,历史,1993年DICOM推出,Digital Imaging Communications In Medicine,医学图像信息对象格式,图像通过网络完成传输、打印效劳等,1994年提出DICOM Media交换协议,DICOM,现在、将来趋势,DICOM是一个动态标准,对医学影像支持的范围增大,CT、MR、CR向NM、XA、US、ES,已超出原来放射领域的范畴,新的图像压缩处理方法的引入,基于小波的JPEG2000,对影像报告的重视和支持Structure Report,图像表达一致性,影像信息平安,与IHE、HL7等其它标准的整合,DICOM,通信协议,约定对信息处理的方式,约定对信息传输的方法,语义Semantic,通信系统间交换的信息、操作指令的具体含义,语法syntax,信息对象及操作指令和比特流之间的编解码方法,同步,通信中对交换信息、操作指令的时序方面的约定,DICOM根本概念,应用域Application Domain根本概念,IOMIOD Attribute,Service ClassSOP ClassesSOP Instance,UID,数据交换域Exchange Domain根本概念,VRByte Ordering,图像编码方式Transfer Syntax,语义层面：,Application Domain,不同厂商、不同产品,医学影像相关的,数据结构,影像,信息交换、处理的方式,认识一致,一致性声明,(Dicom statement),DICOM Service / Service Class,作用在信息对象上的操作、处理,Verification验证效劳,DICOM Storage Service Class图像传输效劳,DICOM Query/Retrive Service Class图像查询/图像检索,DICOM Print Management Service Class图像打印,Modality Worklist 检查列表,Modality Performed Procedure Step 检查步骤、流程通告,Storage Commitment存储职责移交,角色：,SCU,Vs,SCP,效劳提供者SCP: Service Class Provider,对外提供效劳、功能,效劳使用者SCU: Service Class User,使用SCP提供的效劳,实例,User,Service,Provider,IOD,SOP Class,SCP,SCU,Fuji CR,is sending,a,CR Image,to,Archive Wks,语法层面：交换域,Exchange Domain,编码、解码的方法。涉及：,Implicit VR或Explicit VR,Byte Ordering,二进制类型数据编解码的字节顺序,Compression 格式,假设涉及信息压缩，采用的压缩方法,图像编码压缩方式,不编码压缩,JPEG Lossless,JPEG Lossy,RLE,等,传输语法Transfer Syntax,Implicit VR,或,Explicit VR,Byte Ordering,Compression,DICOM,小结,效劳功能- Service Class,传输语法-LEI LEE ,编码压缩-JPEG Lossless JPEG Lossy,功能角色- SCU & SCP,对象内容：病人-检查-序列-图象,连接根底：一致性声明Dicom statement,典型通信过程,CR Storage,Association Establishment :,- send AE Title, Impl. UID, Max PDU Length,- offer the Presentation Context (SOP Class / Transfer Syntax),A-ASSOCIATE-RQ,Association accepted :,- send AE Title, Impl. UID, Max PDU Length,- agreed on the proposed Presentation Context,A-ASSOCIATE-AC,Store (send) Image #1-n,C-STORE-RQ,Store Image response (success / failure),R&F,存档工作站,SCP,C-STORE-RSP,A-RELEASE-RQ,Release the Association,A-RELEASE-RSP,Association Released,CR Storage -SCU,PACS,简介,PACS 的主要功能和应用包括： 1.管理和保存图像取代传统胶片库 2.用影像工作站来读片取代传统的胶片与胶片灯 3.通过 DICOM 3.0 标准将全院各科室、各类影像、医嘱和诊断报告联成网络4.用 Web、email 等现代电子通讯方式来做远程诊断和专家会诊,Picture Archiving and Communications System,RIS,简介,RIS 的主要功能和应用包括：1.病人检查预约、登记2.医嘱的输入与管理3.预约的管理 如预约确实认4.影像诊断报告和生成与管理5.划价、收费,Radiology Information System,HIS,简介,医院行政管理信息,临床信息,HL7,医疗信息交换,标准,Hospital Information System,为医院所属各部门提供病人诊疗信息和行政管理信息的收集、存储、处理、提取和数据交换的能力。,