Hologic Physician s Viewer 5.0 DICOM Conformance Statement

Transcription

1 Hologic Physician s Viewer 5.0 DICOM Conformance Statement MAN REV 001 Page 1 of 18

2 1 INTRODUCTION Purpose of the Document References Definitions IMPLEMENTATION MODEL Application Data Flow Diagram Storage (SCU) Storage (SCP) Query / Retrieve Functional Definitions of AE s Physician s Viewer Storage Query / Retrieve DICOM Server Sequencing of Real-world Activities Physician s Viewer Storage Query / Retrieve DICOM Server AE SPECIFICATIONS Physician s Viewer Association Establishment Policies General Number Of Associations Asynchronous Nature Implementation Identifying Information Association Initiation by Real-World Activity Real-World Activity Storage Associated Real-World Activity Proposed Presentation Contexts SOP Specific Conformance Supported Attributes Response Status Codes Real-World Activity - Query / Retrieve Associated Real-World Activity Proposed Presentation Contexts SOP Specific Conformance...12 Hologic, Inc. Page 2 of 18

3 Query Supported Attributes Response Status Codes Retrieve Supported Attributes Response Status Codes DICOM Server Association Establishment Policies General Number Of Associations Asynchronous Nature Implementation Identifying Information Association Initiation by Real-World Activity Association Acceptance Policy Associated Real-World Activity Presentation Context Table SOP Specific Conformance COMMUNICATION PROFILES Supported Communication Stacks TCP/IP Stack Physical Media Support CONFIGURATION Physician s Viewer AE Title / Presentation Address Mapping Configurable Parameters Storage Query / Retrieve DICOM Server AE Title / Presentation Address Mapping Configurable Parameters SUPPORT OF EXTENDED CHARACTER SET Hologic, Inc. Page 3 of 18

4 1 Introduction 1.1 Purpose of the Document This document is the DICOM Conformance Statement for Hologic Physician s Viewer, version 5.0. It describes its DICOM capabilities and how it conforms to the DICOM 3.0 standard. 1.2 References 1. American College of Radiology - National Electrical Manufacturers Association (ACR-NEMA) Digital Imaging and Communications in Medicine V Definitions This section provides the definitions of terms, acronyms, and abbreviations that are used throughout the document. DICOM HIS RIS AE SCU SCP SOP VR VM UID DIMSE TCP/IP QDR UI GUI Digital Imaging and Communication in Medicine, a standard on image communications in medical applications Hospital Information System Radiology Information System Application Entity Service Class User Service Class Provider Service-Object Pair, a definition of an information object (like an image) and of service (like storage) that can be performed for the object Value Representation, a data encoding method in DICOM Value Multiplicity, number of values in a DICOM attribute Unique Identifier DICOM Message Service Element Transmission Control Protocol / Internet Protocol, a widely used computer networking protocol QDR for Windows Hologic image acquisition modality Application s User Interface Graphical User Interface Hologic, Inc. Page 4 of 18

5 2 Implementation Model 2.1 Application Data Flow Diagram There are three Real-World Activities that occur in the Physician s Viewer: Storage (SCU and SCP) and Query/Retrieve. The Application Data Flow Diagram shown on Figure 1 represents all of the Application Entities present in the Physician s Viewer application, and graphically depicts the relationship of the AE s use of DICOM to Real- World Activities. Figure 1. Application Data Flow Diagram Storage (SCU) Hologic, Inc. Page 5 of 18

6 1. Physician s Viewer application generates DICOM files and stores them locally. 2. Physician s Viewer application initiates an association with a remote Storage SCP. 3. Physician s Viewer application pushes files to the remote Storage SCP using C- STORE command, and then closes the association Storage (SCP) 1. DICOM Server application listens for incoming association requests, typically from QDR or another Physician s Viewer. 2. Upon accepting the association, DICOM Server stores the received DICOM files locally Query / Retrieve 1. Physician s Viewer application initiates an association with a remote Query / Retrieve SCP. 2. Physician s Viewer application queries the remote Query / Retrieve SCP to obtain the information using C-FIND command, and then closes the association. 3. Physician s Viewer application initiates another association with remote Query / Retrieve SCP. 4. Physician s Viewer application requests the remote Query / Retrieve SCP to retrieve the images to the DICOM Server using C-MOVE command. 5. DICOM Server stores received DICOM files locally. 6. Upon retrieving all the images, Physician s Viewer closes the association. 2.2 Functional Definitions of AE s There are two software applications: Physician s Viewer and DICOM Server representing two Application Entities Physician s Viewer The Physician s Viewer application may serve as an SCU for Storage and Query/Retrieve services. The user may add, remove, or modify remote DICOM AE s via DICOM configuration screen Storage Hologic, Inc. Page 6 of 18

7 The user is presented with a UI to send either the entire study, or a subset of images from the study. If multiple send destinations are available, the user may pick one or more destinations from the list. The Physician s Viewer generates corresponding DICOM files and stores them locally. For the successful transactions, the Physician s Viewer puts entries into the Queue Database with status COMPLETED. If the association cannot be established, or error occurs during the communication process, the Physician s Viewer adds the transaction to the Queue Database with status PENDING to retry later according to configured retry number and interval. In this case, the application refers the remote DICOM AE s using the destination name. I.e., if the user modifies the parameters of the destination (such as Network Port, IP address, or AE Title), the Physician s Viewer will try to send the images according to the new parameters. If Storage SCP returns a response with status indicating failure, the Physician s Viewer puts a corresponding entry into the Queue Database with status FAILED, and no retry will be made thereafter Query / Retrieve The user is presented with a UI to select one or more matching keys as search criteria to obtain the list of matching entries in the Image Archive. If multiple remote Query / Retrieve SCP are available, the user may pick the destination from the list. Only single selection is allowed. In case of successful query, it displays to the user the list of obtained entries. The user may select one or more entries from the list to retrieve the images for. The user may use the Query/Retrieve configuration screen to specify a destination where to retrieve the images. Typically the destination is the DICOM Server, so the user may open the images with Physician Viewer. During the image transfer, the Physician s Viewer displays the transfer status (i.e. how many images have already been transferred). If either Query or Retrieve part of the transaction fails, no retry will be made DICOM Server The DICOM Server application serves as an SCP for Storage. It receives and stores the DICOM images for use by Physician s Viewer only. Typically, it receives the images from either QDR stations or Physician s Viewer stations. Upon receiving an image, it stores it locally, so the Physician Viewer application can access the file. 2.3 Sequencing of Real-world Activities Hologic, Inc. Page 7 of 18

8 2.3.1 Physician s Viewer Storage The Physician s Viewer application tries to open an association with remote Storage SCP for each specified destination and send the files using C-STORE request. Upon receipt of a C-STORE Response or in case of error, it closes the association Query / Retrieve To perform the Query part of the service, the Physician s Viewer tries to open an association with the remote Query / Retrieve SCP. Upon accepting the association by the remote SCP, it sends the series of C-FIND requests according to the specified search criteria. After receiving all requested information, the Physician s Viewer closes the association. To perform the Retrieve part of the service, the Physician s Viewer tries to open an association with the remote Query / Retrieve SCP. Upon accepting the association by the remote SCP, it sends series of C-MOVE requests according to the user selection of images and the destination, to retrieve images to a specified destination, typically a DICOM Server. Specified DICOM Server receives series of C-STORE requests and stores the images locally as DICOM files. After all requested images have been retrieved, the Physician s Viewer closes the association DICOM Server The DICOM Server listens for incoming associations. Upon receiving the C-STORE requests, it receives the images and sends back a C-STORE response. 3 AE Specifications Hologic, Inc. Page 8 of 18

9 3.1 Physician s Viewer Physician s Viewer application provides Standard Conformance to the following DICOM V3.0 SOP Classes as an SCU: SOP Class Name SOP Class UID Secondary Capture Image Storage Study Root Query/Retrieve Information Model - FIND Study Root Query/Retrieve Information Model - MOVE Association Establishment Policies General The maximum PDU length is 28,672 bytes. The SOP Class Extended Negotiation is not supported Number Of Associations Physician s Viewer application initiates only one association at a time Asynchronous Nature Physician s Viewer application does not support asynchronous communications Implementation Identifying Information The Implementation Identifying Information for Physician s Viewer is: Implementation Class UID Association Initiation by Real-World Activity Real-World Activity Storage Hologic, Inc. Page 9 of 18

10 Associated Real-World Activity The image transferring service may start in two ways: Manually, upon the user s request Automatically, as a result of retry attempt. In either case, the Physician s Viewer application initiates an association with the Storage SCP and sends DICOM files using C-STORE command Proposed Presentation Contexts Abstract Syntax Transfer Syntax Name UID Name List UID List Secondary Capture Image Storage Implicit VR Little Explicit VR Little Explicit VR Big Role SCU Exten ded Negotia tion None SOP Specific Conformance Supported Attributes The Physician s Viewer application stores the images as DICOM files. When it transfers the images, it includes all the DICOM attributes present in the original DICOM file. In addition, it may include following attributes: Attribute Name Tag VR VM Name of Physician(s) Reading Study (0008,1060) PN 1 Private Creator Data Element (0021,00xx) LO 1 Private Attribute (0021,xx01) LT 1 Hologic, Inc. Page 10 of 18

11 The private group (0021) contains image analysis data in XML format, used internally by the Physician s Viewer. It consists of two attributes: the Private Creator Data Element and the element containing the actual data. The application tries to assign the value (0010) to the Private Creator Data Element. If group (0021) is used by some other Private Creator, the application will try to assign the lowest possible value: (0011), (0012), and so on. This element will always have the value Hologic. The element containing the actual data is the element number 1 in the reserved private block. I.e. if the application has assigned to the Private Creator Data Element value of (0010) and reserved the private block (1000) (10FF), the attribute (0021,1001) will contain the actual data Response Status Codes Status Status Meaning Behavior Code Success 0000 Image transferred successfully Transaction marked as COMPLETED Warning B000 Coercion of Data Elements Warning is logged, Warning B006 Elements Discarded transaction marked as Warning B007 Data Set does not match SOP Class COMPLETED Other Other Failure or unknown status code Error is logged, transaction marked as FAILED Real-World Activity - Query / Retrieve Associated Real-World Activity The Physician s Viewer application initiates an association with Query/Retrieve SCP in response to the user s request to either query the patient/study data or retrieve the images Proposed Presentation Contexts Abstract Syntax Transfer Syntax Name UID Name List UID List Role Exten ded Negotia tion Hologic, Inc. Page 11 of 18

12 Study Root Query/Retri eve Information Model - FIND Study Root Query/Retri eve Information Model - MOVE Implicit VR Little Explicit VR Little Explicit VR Big Implicit VR Little Explicit VR Little Explicit VR Big SCU SCU None None SOP Specific Conformance Query / Retrieve service consists of two parts: Query and Retrieve Query Supported Attributes Attribute Name Tag Type VR VM Study Level Study Instance UID (0020,000D) 1 UI 1 Study Date (0008,0020) 2 DA 1 Study Time (0008,0030) 2 TM 1 Accession Number (0008,0050) 2 SH 1 Patient Name (0010,0010) 2 PN 1 Patient ID (0010,0020) 2 LO 1 Patient s Birth Date (0010,0030) 2 DA 1 Hologic, Inc. Page 12 of 18

13 Study ID (0020,0010) 2 SH 1 Modalities in Study (0008,0061) 3 CS 1 Series Level Series Instance UID (0020,000E) 1 UI 1 Modality (0008,0060) 1 CS 1 Series Number (0020,0011) 2 IS 1 Request Attribute Sequence (0040,0275) 3 SQ 1 >Requested Procedure ID (0040,1001) 3 SH 1 >Scheduled Procedure Step ID (0040,0009) 3 SH 1 Performed Procedure Step Start Date (0040,0244) 3 DA 1 Performed Procedure Step Start Time (0040,0245) 2 TM 1 Image Level SOP Instance UID (0008,0018) 1 UI 1 Instance Number (0020,0013) 2 IS Response Status Codes Status Status Code Meaning Success 0000 Matching is complete No final Identifier is supplied Pending FF00 Matches are continuing Current Match is supplied and any Optional Keys were supported in the same manner as Required Keys Pending (No FF01 Matches are continuing Warning that Optional Key one or more Optional Keys were not Support) supported for existence for this Behavior Complete the transaction Continue the transaction Continue the transaction without logging any warnings or errors Identifier Other Other Failure or unknown status code Terminate the transaction and log a failure message Retrieve Supported Attributes Study Instance UID Series Instance UID Attribute Name Tag (0020,000D) (0020,000E) Hologic, Inc. Page 13 of 18

14 Move Destination (0000,0600) The C-MOVE request is performed at the Series Level. Typically, the Physician s Viewer uses DICOM images created by QDR application. QDR creates one image per series, i.e. each series contains only one image Response Status Codes Status Status Meaning Behavior Code Success 0000 Moved all images successfully Complete the transaction Pending FF00 Continuing moving images Continue the transaction Other Other Failure or unknown status code Terminate the transaction and log a failure message. 3.2 DICOM Server DICOM Server application provides Standard Conformance to the following DICOM V3.0 SOP Classes as an SCP: SOP Class Name SOP Class UID Secondary Capture Image Storage Association Establishment Policies General The maximum PDU length is 16,384 bytes. The SOP Class Extended Negotiation is not supported Number Of Associations Hologic, Inc. Page 14 of 18

15 DICOM Server application accepts only one association at a time Asynchronous Nature DICOM Server application does not support asynchronous communications Implementation Identifying Information The Implementation Identifying Information for DICOM Server is: Implementation Class UID Association Initiation by Real-World Activity DICOM Server application never initiates associations Association Acceptance Policy Associated Real-World Activity A remote DICOM SCU requests image storage. DICOM Server application receives the image and stores it locally as a DICOM file Presentation Context Table Abstract Syntax Transfer Syntax Name UID Name List UID List Secondary Capture Image Storage Implicit VR Little Role Exten ded Negotia tion SCU None Hologic, Inc. Page 15 of 18

16 Explicit VR Little Explicit VR Big SOP Specific Conformance DICOM Server application always returns success status code Communication Profiles 4.1 Supported Communication Stacks DICOM Upper Layer (PS 3.8.) is supported using TCP/IP. 4.2 TCP/IP Stack The TCP/IP stack is inherited from the operating system on which it is running. 4.3 Physical Media Support The physical medium is inherited from the computer on which it is running. 5 Configuration 5.1 Physician s Viewer AE Title / Presentation Address Mapping AE Title is user configurable. Hologic, Inc. Page 16 of 18

17 5.1.2 Configurable Parameters Storage The following fields are configurable for the local AE: Local AE Title Connection Timeout Retry Number Retry Interval The following fields are configurable for every remote DICOM AE: Remote AE Title Remote IP Address Remote Port Number Physician Reading Study Query / Retrieve The following fields are configurable for the local AE: Local AE Title The following fields are configurable for every remote DICOM AE: Remote AE Title Remote IP Address Remote Port Number The following fields are configurable and used as search criteria for a Query: Patient Name Patient ID Patient s Birth Date Study Date (range) Accession Number Study ID Study Time Study Instance UID Modalities in Study Referring Physician Modality Series Number Series Instance UID Requested Procedure ID Scheduled Procedure Step ID Hologic, Inc. Page 17 of 18

18 Performed Procedure Step Start Date Performed Procedure Step Start Time Instance Number SOP Instance UID The following fields are configurable for Retrieve service: Computer name or IP Address of the destination where to retrieve images 5.2 DICOM Server AE Title / Presentation Address Mapping AE Title is user configurable Configurable Parameters The following fields are configurable: Local AE Title Listening Network Port Directory where to save the DICOM files 6 Support of Extended Character Set No Extended Character sets are supported. Hologic, Inc. Page 18 of 18