DICOM Fundamentals课件.pptVIP

Service Objects Commands 物件 命令 Service-Object Pair (SOP) 服務 SOP DICOM通訊(1) 以TCP/IP通訊 協定為基礎 Upper Layer(UL) Service Boundary Medical Imaging Application IP Network TCP DICOM Upper Layer Protocol for TCP/IP DICOM Application Message Exchange DICOM通訊(2) IP Network TCP DICOM UL Protocol for TCP/IP Association Control Server Element Presentation Session Transport Network Data Link Physical CT Scanner Encodes Images from An examination Into a DICOM object Workstation Decodes DICOM object Into images For display DIMSEs SEND DIMSEs RECEIVE Network Connection DICOM TCP/IP Image Acquisition Workstation Movement of a set of CT images from the scanner to the workstation. Is the image in ACR-NEMA DICOM ? ACR-NEMA DICOM Encoder PACS Controller Long-Term Archive Device Collaborating Partners Display Format ACR-NEMA DICOM Decoder Yes Digital Images Archive Retrieve *Archive images in ACR-NEMA DICOM format *Receive images in ACR-NEMA DICOM format No Data Encoding/Decoding to ACR-NEMA and DICOM Standards Procedure of converting image format to the ACR-NEMA and DICOM standards. DICOM通訊(3) 建立關聯（連線）：Association 在通訊前，DICOM AE 必須先建立關聯，以確認： 可以提供服務的項目（哪些DICOM服務） 傳輸語法（transfer syntax） 建立關聯(Establishing an association) DICOM通訊(4) 例一：CT Scanner 傳送一系列影像至PACS Archiving Sever（Controller） Service：C-STORE (Composite Service) SCU：CT Scanner SCP：PACS Controller Service：Store CT Images SCP CT Scanner SCU Images PACS Controller … (7) Association Request Association Response C-STORE Request C-STORE Response First Data Packet Confirmation Last Data Packet Confirmation Dropping Association Request Dropping Association Response CLIENT CT SCANNER (C-STORE SCU) Requests for establishing association Requests for C-STORE service Sends image data (1) - (7) Sends image data Requests for dropping association (0)