DICOM Conformance Statement. Gyroscan NT R6.2 & R6.1 & R5.6 & R4.6. Document Number September 1999

Transcription

1 Philips Medical Systems DICOM Conformance Statement Gyroscan NT R6.2 & R6.1 & R5.6 & R4.6 Document Number September 1999 Copyright Philips Medical Systems Nederland B.V Philips Medical Systems apple PHILIPS

2 Page ii DICOM Conformance Statement Sep 99 Issued by: Philips Medical Systems Nederland B.V. Integrated Clinical Solutions, Marketing & Communications Building QP-2129 P.O. Box DA Best The Netherlands Tel.: Fax.: Internet (with the latest versions of Conformance Statements and other DICOM information): ftp://ftp.philips.com/pub/ms/dicom/conformance_stmnts

3 Sep 99 DICOM Conformance Statement Page iii Table of Contents 1 Introduction Scope and field of application Intended audience Contents and structure Used definitions, terms and abbreviations References Important note to the reader General Acronyms and Abbreviations Implementation model Application Data Flow Diagram Functional definition of Application Entities Sequencing of Real World Activities AE Specifications Gyroscan DICOM Image Export AE Specification Association Establishment Policies Association Initiation Policy Association Acceptance Policy Gyroscan DICOM Worklist AE Specification Association Establishment Policies Association Initiation Policy Association Acceptance Policy Communication Profiles Supported Communication Stacks TCP/IP Stack Physical Media Support Extensions/Specializations/Privatizations Configuration AE Title/Presentation Address mapping Local AE Titles and Presentation Addresses Remote AE Titles and Presentation Addresses Configurable parameters Support of Extended Character Sets Overview applied MR Image IOD Overview applied Modality Worklist Information Model Remarks, Implementation restrictions and choices

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5 Sep 99 DICOM Conformance Statement Page 1 of 24 Introduction 1 Introduction This section provides general information about the scope, intended audience and contents of this Conformance Statement and how to use it. 1.1 Scope and field of application The scope of this DICOM Conformance Statement is to facilitate data exchange between equipment of Philips Medical Systems and with equipment of other vendors. This document specifies the compliance to the DICOM standard, formally called the NEMA PS 3.X-1996 standards. It contains a short description of the applications involved and provides technical information about the data exchange capabilities of the equipment. The main elements describing these capabilities are: the supported DICOM Service Object Pair (SOP) Classes, Roles, Information Object Definitions (IOD), Service Elements and Transfer Syntaxes. The field of application is the integration of the Philips Medical Systems equipment into an environment of medical devices. This Conformance Statement should be read in conjunction with the DICOM standard and its addenda. The conformance to the DICOM standard is a key element of the Inturis Program (see [INTURIS]). 1.2 Intended audience This Conformance Statement is intended for: (potential) clients, marketing staff interested in data exchange functionality, system integrators and Customer Support Engineers of medical equipment, software engineers implementing DICOM interfaces. It is assumed that the reader is familiar with the DICOM standard. 1.3 Contents and structure The DICOM Conformance Statement is contained in section 2 through 7 and follows the contents and structuring requirements of DICOM PS Additionally, the sections following 7 (if present) specify the details of the applied IODs and Service Elements. 1.4 Used definitions, terms and abbreviations DICOM definitions, terms and abbreviations are used throughout this Conformance Statement. For a description of these, see NEMA PS The word Philips in this document refers to Philips Medical Systems. 1.5 References [DICOM] The Digital Imaging and Communications in Medicine (DICOM) standard: NEMA PS 3.X (X refers to the part 1-13) National Electrical Manufacturers Association (NEMA) Publication Sales 1300 N. 17th Street, Suite 1847

6 Page 2 of 24 DICOM Conformance Statement Sep 99 Introduction Rosslyn, Va , United States of America [INTURIS] Philips Inturis Program Integrated Clinical Solutions Philips Medical Systems Nederland B.V. (see address at page ii) 1.6 Important note to the reader This Conformance Statement by itself does not guarantee successful interoperability of Philips equipment with non-philips equipment. The user (or user s agent) should be aware of the following issues: Interoperability Interoperability refers to the ability of application functions, distributed over two or more systems, to work successfully together. The integration of medical devices into a networked environment may require application functions that are not specified within the scope of DICOM. Consequently, using only the information provided by this Conformance Statement does not guarantee interoperability of Philips equipment with non-philips equipment. It is the user s responsibility to analyse thoroughly the application requirements and to specify a solution that integrates Philips equipment with non-philips equipment. Validation Philips equipment has been carefully tested to assure that the actual implementation of the DICOM interface corresponds with this Conformance Statement. Where Philips equipment is linked to non-philips equipment, the first step is to compare the relevant Conformance Statements. If the Conformance Statements indicate that successful information exchange should be possible, additional validation tests will be necessary to ensure the functionality, performance, accuracy and stability of image and image related data. It is the responsibility of the user (or user s agent) to specify the appropriate test suite and to carry out the additional validation tests. New versions of the DICOM Standard The DICOM Standard will evolve in future to meet the user s growing requirements and to incorporate new features and technologies. Philips is actively involved in this evolution and plans to adapt its equipment to future versions of the DICOM Standard. In order to do so, Philips reserves the right to make changes to its products or to discontinue its delivery. The user should ensure that any non-philips provider linking to Philips equipment, also adapts to future versions of the DICOM Standard. If not, the incorporation of DICOM enhancements into Philips equipment may lead to loss of connectivity (in case of networking) and incompatibility (in case of media).

7 Sep 99 DICOM Conformance Statement Page 3 of 24 Introduction 1.7 General Acronyms and Abbreviations. The following acronyms and abbreviations are used in the document. ACC American College of Cardiology AE Application Entity ACR American College of Radiology ANSI American National Standard Institute BOT Basic Offset Table CD-R CD Recordable CD-M CD Medical DCI Digital Cardio Imaging DCR Dynamic Cardio Review DICOM Digital Imaging and Communication in Medicine DIMSE DICOM Message Service Element DIMSE-C DICOM Message Service Element-Composite DIMSE-N DICOM Message Service Element-Normalized ELE Explicit VR Little Endian EBE Explicit VR Big Endian FSC File Set Creator GUI Graphic User Interface HIS Hospital Information System HL7 Health Level Seven ILE Implicit VR Little Endian IOD Information Object Definition ISIS Information System - Imaging System NEMA National Electrical Manufacturers Association PDU Protocol Data Unit RIS Radiology Information System RWA Real World Activity SC Secondary Capture SCM Study Component Management SCP Service Class Provider SCU Service Class User SOP Service Object Pair TCP/IP Transmission Control Protocol/Internet protocol UID Unique Identifier WLM Worklist Management

8 Page 4 of 24 DICOM Conformance Statement Sep 99 Implementation model 2 Implementation model The Gyroscan NT system of Philips Medical Systems is an MR image generating system. The system contains: a DICOM Image Export function to transfer DICOM MR images and image related data from Gyroscan to a remote system, a DICOM Radiology Information System (RIS) interface to retrieve the next examination from the worklist to be examined. These DICOM functions are described in this document. 2.1 Application Data Flow Diagram Gyroscan behaves as a system with two Application Entities (AE). The related Implementation Model is shown in Figure 2-1 on page 5. The Gyroscan DICOM Image Export function can be activated by the Gyroscan operator. The images to be sent are selected from one or more examinations. At export request the images will be converted into DICOM format and sent out to a remote destination. This destination is previously selected by the operator from the user interface. The images transferred are instances of the DICOM Magnetic Resonance (MR) Class. These images are intended for viewing purposes, including planscan viewing by calculating intersections with reference images. Not included is graphics (annotations). Post-processing like MPR, MIP, 3D reconstruction and rendering may be possible, depending on the capabilities of the workstation receiving the MR images. The Gyroscan DICOM Modality Worklist function makes it possible to retrieve the next examination to be performed. This worklist is normally registered in a RIS and the current examination for the Gyroscan should be selected at the RIS side. A part of the received examination data will be shown on the user interface and is used as image attribute values when exporting or printing these images.

9 Sep 99 DICOM Conformance Statement Page 5 of 24 Implementation model Image Export Request ( ) Gyroscan DICOM Image Export AE (section 3.1) Local Remote Store Image Request for next examination ( ) Gyroscan DICOM Worklist AE (section 3.2) Register & Select Examination (at RIS) DICOM Standard Interface Figure 2-1: The Gyroscan DICOM Implementation Model (with references to the related sections) 2.2 Functional definition of Application Entities The Gyroscan DICOM Image Export AE acts as a Service Class User (SCU) of the Storage Service Class. When the export is initiated, the AE will open an association to the remote system. The selected images and related image data are converted into a DICOM message to be sent to the remote system. The Gyroscan DICOM Worklist AE acts as a Service Class User (SCU) of the Basic Worklist Management Service Class. After requesting for the next examination, it will receive the examination data from the RIS and displays (a part of) this data on the user interface and stores this data in resulting images of the examination. Gyroscan does not support Service Classes as Service Class Provider (SCP). 2.3 Sequencing of Real World Activities When a RIS interface is configured, the Next Patients Examination data can be requested from the worklist. The next examination must be defined at the RIS side. After import of patient data, missing data can be added and erroneous data can be modified by the user. Now the examination scan(s) are performed. After reconstruction the resulting images can be exported via DICOM. The required DICOM node can be selected by the operator from the internal node list.

10 Page 6 of 24 DICOM Conformance Statement Sep 99 AE Specifications 3 AE Specifications Gyroscan contains two independent Application Entities. 3.1 Gyroscan DICOM Image Export AE Specification The Gyroscan DICOM Image Export Application Entity provides Standard Conformance to the following DICOM V3.0 SOP Classes as an SCU: Table 3-1: Supported SOP Classes by the Gyroscan DICOM Image Export AE as SCU SOP Class Name UID MR Image Storage - STORE The Gyroscan DICOM Image Export Application Entity does not support DICOM V3.0 SOP Classes as an SCP Association Establishment Policies General Gyroscan has a configurable maximum PDU size. The Maximum PDU might be 0 to identify no maximum size but any size during transfer. See Configurable parameters on page Number of Associations Gyroscan will attempt to establish one association at a time Asynchronous Nature Gyroscan does not support asynchronous operations and will not perform asynchronous window negotiation Implementation Identifying Information The Implementation Class UID is: The implementation version name is: MR STORE 1.1

11 Sep 99 DICOM Conformance Statement Page 7 of 24 AE Specifications Association Initiation Policy Gyroscan initiates associations as a result of one Real-World activity: the Gyroscan operator requests for Image Export, i.e. send the selected images from the Gyroscan to a remote system Image Export Request Associated Real-World Activity After selection of a remote station and after selection of one of more images, these images will be sent when initiating the Export command. Gyroscan initiates one association to the selected remote entity and uses it to send the selected images via C-STORE requests (and receives the associated C-STORE Responses). The association is released by Gyroscan after successful transfer of the images or when an error occurs Proposed Presentation Contexts Gyroscan will propose the following presentation contexts: Table 3-2: Proposed Presentation Contexts for Image Export Request Presentation Context table Abstract Syntax Transfer Syntax Name UID Name List UID List Role Extended Negotiation MR Image Storage - STORE MR Image Storage - STORE MR Image Storage - STORE ILE SCU None ELI SCU None EBE SCU None C-STORE SCU Conformance Gyroscan provides standard conformance. Gyroscan has the following behaviour on successful (with or without warnings) and unsuccessful transfer of images: Success (return status 0000) The successful transfer is indicated on the console: Done. Refused (return status A7xx), Error (return status A9xx or Cxxx) and Warning (return status B00x) The failed transfer is indicated on the console: Network Error. The reason is not shown. While busy with transfer, the status Busy is shown on the Gyroscan console. Table 3-3 lists the applied Conditional (DICOM Type 1C and 2C) and Optional (DICOM Type 3) attributes of the standard MR Image IOD. A detailed overview of all applied attributes and

12 Page 8 of 24 DICOM Conformance Statement Sep 99 AE Specifications additional notes are given in section 8 on page 14. Table 3-3: Applied Conditional and Optional Attributes of the MR Image IOD Information Entity Module Conditional Attributes Optional Attributes Patient Patient - - Study General Study - Study Description Patient Study - Patient Weight Study Classification Series General Series Patient Position Series Date, Series Time, Series Description, Protocol Name Frame of Reference Frame of Reference - - Equipment General Equipment - Institution Name, Manufacturer s Model Name, Device Serial Number, Software Version(s) Image General Image Image Date, Image Time Referenced Image Sequence, Acquisition Number, Image Comments. Image Plane - - Image Pixel - - MR Image Modality LUT Repetition Time, Inversion Time, Trigger Time Rescale Intercept, Rescale Slope, rescale Type. Number of Averages, Imaging Frequency, Imaged Nucleus, Echo Number(s), Magnetic Field Strength, Spacing Between Slices, Number of Phase Encoding Steps, Percent Sampling, Percent Phase Field of View, Low R-R Value, High R-R Value, Intervals Acquired, Intervals Rejected, Heart Rate, Receiving Coil, Transmitting Coil, Phase Encoding Direction, Flip Angle, Temporal Position Identifier. VOI LUT Window Width Window Center SOP Common Specific Character Set Instance Creation Date, Instance Creation Time, Instance Creator UID Association Acceptance Policy The Gyroscan Application Entity does not accept associations.

13 Sep 99 DICOM Conformance Statement Page 9 of 24 AE Specifications 3.2 Gyroscan DICOM Worklist AE Specification The Gyroscan DICOM Worklist Application Entity provides Standard Extended Conformance to the following DICOM 3.0 SOP class as an SCU: Table 3-4: Supported SOP class by the Gyroscan DICOM Worklist AE as SCU SOP class Name UID Modality Worklist Information Model - FIND The Gyroscan DICOM Worklist Application Entity does not support DICOM V3.0 SOP Classes as an SCP Association Establishment Policies General Gyroscan has a configurable maximum PDU size Number of Associations Gyroscan will attempt to establish one association at a time Asynchronous Nature Gyroscan does not support asynchronous operations and will not perform asynchronous window negotiation Implementation Identifying Information The Implementation Class UID is: The implementation version name is: MR WLM 1.1

14 Page 10 of 24 DICOM Conformance Statement Sep 99 AE Specifications Association Initiation Policy Gyroscan DICOM Worklist AE initiates associations as a result of one Real-World Activity: the Gyroscan NT operator requests for a new examination Next Examination Request Associated Real-World Activity This Gyroscan DICOM Worklist function will be accessible through the Gyroscan User Interface. An association will be set-up to the configured remote system (usually a RIS). After receiving the worklist the association is released Proposed Presentation Contexts Gyroscan DICOM Worklist AE will propose the following presentation contexts: Table 3-5: Proposed Presentation Contexts for the New Examination Request Presentation Context table Abstract Syntax Transfer Syntax Name UID Name List UID List Role Extended Negotiation Modality Worklist Information Model - FIND Modality Worklist Information Model - FIND Modality Worklist Information Model - FIND ILE SCU None ELI SCU None EBE SCU None SOP Specific Conformance to Modality Worklist Management Gyroscan provides standard conformance. However, this release of Gyroscan contains some implementation restrictions w.r.t. the use of the examination data resulting from Modality Worklist Management, see below. An indication of the status of the C-FIND Responses (Success, Refused, Error) is displayed on the user interface. The New Examination screen on the Gyroscan console will be empty in case of an error. Table 3-6 lists the applied optional Matching Keys in the C-FIND Requests. Single Value Matching is applied. Only the type 1 and 2 Return Key attributes (see DICOM Supplement 10) are used, except the optional and conditional Return Keys in Table 3-7.

15 Sep 99 DICOM Conformance Statement Page 11 of 24 AE Specifications Table 3-6: The applied optional Matching Keys Module Scheduled Procedure Step Applied optional Matching Keys Scheduled Procedure Step Status (present in Scheduled Procedure Step Sequence) Table 3-7: The applied optional and conditional Return Keys Module Scheduled Procedure Step Applied optional Return Keys Scheduled Procedure Step Description (present in Scheduled Procedure Step Sequence) Section 9 on page 22 gives a detailed overview of all applied (mandatory/optional) Matching and Return Keys and additional notes. Important Note for this Modality Worklist implementation: This system release expects one Worklist entry as result of a C-FIND Request. This implies that one Scheduled Procedure Step out of the Gyroscan worklist must be selected first on the RIS before the next examination is requested on the Gyroscan NT. When more then one Worklist entry is returned, the Gyroscan will reject these entries and issues a C-CANCEL-FIND Request as indication of a unexpected transfer by the RIS Association Acceptance Policy The Gyroscan DICOM Worklist AE does not accept associations.

16 Page 12 of 24 DICOM Conformance Statement Sep 99 Communication Profiles 4 Communication Profiles 4.1 Supported Communication Stacks Gyroscan provides DICOM V3.0 TCP/IP Network Communication Support as defined in Part 8 of the DICOM Standard. 4.2 TCP/IP Stack Gyroscan uses the TCP/IP program installed on the DEC Alpha where the Gyroscan Application Entities are running on. This is a subroutine library that is based on a Berkeley socket interface Physical Media Support Gyroscan supports (dependent on the hardware configuration) ISO BASE5 (Thickwire), 10BASE2 (Thin-wire), 10BASE-T (Twisted-pair) and 100BASE-T (Twisted-pair) Ethernet. 5 Extensions/Specializations/Privatizations The following Standard Extensions are applied for the MR Image Storage SOP Class. See also the overview of the applied MR Image IOD in section 8 on page 14. Table 5-1: Applied Standard Extensions Module Attribute Note Gyroscan Series (private module) Study Classification Reconstruction Number (0021,xx01) Study Comments Identifies the applied reconstruction on acquisition data. Modality LUT Rescale Intercept Present if configured. Must be applied when viewing the image. Gyroscan Image (private module) Rescale Slope Rescale Type Chemical Shift Number (0019,xx11) Phase Number (Philips) (0019,xx12) Slice Number 0021,xx02 See note Rescale Intercept above. See note Rescale Intercept above. Identifies the chemical shift interval for spectroscopic reconstruction. Identifies a phase interval of the cardiac cycle. identifies a slice (=image plane) for an acquisition and/or a reconstruction

17 Sep 99 DICOM Conformance Statement Page 13 of 24 Configuration 6 Configuration The Gyroscan system is configured by Philips engineer only. 6.1 AE Title/Presentation Address mapping Local AE Titles and Presentation Addresses The IP address and both AE Titles of the Gyroscan are configurable. Both are allowed to be equal Remote AE Titles and Presentation Addresses The following information of remote systems (acting as Service Class Provider) must be configured on Gyroscan: The AE title. Default character Repertoire excluding control characters LF, FF, CR and ESC, maximum 16 bytes. The host name and IP addresses. The port number at which the remote system accepts association requests. 6.2 Configurable parameters The maximum PDU size (of incoming PDUs) is configurable in steps of 1K, 2K, 4K, 8K, 32K, 16K or more e.g. 64K. In principle any value in between these values is possible. Default is 16K = bytes. Export or do not export the Rescale attributes, see Table 5-1 on page 12. The time-out value on waiting on the RIS Response Message of Modality Worklist. Institution Name, Table 8-9 on page 17. Software version, Table 8-9 on page Support of Extended Character Sets Gyroscan supports Extended Character Set ISO_IR 100 which is the Latin alphabet No 1, supplementary set.

18 Page 14 of 24 DICOM Conformance Statement Sep 99 Overview applied MR Image IOD 8 Overview applied MR Image IOD The modules selected from the MR Image IOD module table of DICOM and the modules extended are given in the table below. Table 8-1: Applied Modules in the MR Image IOD Information Entity Module Patient Study Patient General Study Patient Study Study Classification Series General Series Gyroscan Series (private module) Frame of Reference Equipment Image Frame of Reference General Equipment General Image Image Plane Image Pixel MR Image Gyroscan Image (private module) Modality LUT VOI LUT SOP Common The details of these applied modules are given in the tables below. The list of possible values are given (if applicable). The situation that an attribute is present conditionally/optionally or that an attribute may contain a zero length value, is indicated too. Conditions and Defined/Enumerated Values of DICOM 3.0 are applicable but are not shown in the tables. Table 8-2: MR Image Storage SOP Class - Patient Module Patient s Name 0010,0010 Received from RIS or entered by the operator Patient ID 0010,0020 Received from RIS or entered by the operator (this is the Registration Number)

19 Sep 99 DICOM Conformance Statement Page 15 of 24 Overview applied MR Image IOD Table 8-2: MR Image Storage SOP Class - Patient Module (Continued) Patient s Birth Date 0010,0030 Received from RIS or entered by the operator Patient s Sex 0010,0040 Received from RIS or entered by the operator Applied value(s): F, M, O Table 8-3: MR Image Storage SOP Class - General Study Module Study Date 0008,0020 Received from RIS, entered by the operator or has zero length value. Study Time 0008,0030 Accession Number 0008,0050 Received from RIS, entered by the operator or has a zero length value. Referring Physician s Name 0008,0090 Received from RIS, entered by the operator or has a zero length value. Study Description 0008,1030 This is the Exam Name. Default value may be received from RIS (as Return Key Scheduled Procedure Step Description) Study Instance UID 0020,000D From RIS or created dynamically at export. Study ID 0020,0010 Table 8-4: MR Image Storage SOP Class - Patient Study Module Patient s Weight 0010,1030 Received from RIS or entered by the operator

20 Page 16 of 24 DICOM Conformance Statement Sep 99 Overview applied MR Image IOD Table 8-5: MR Image Storage SOP Class - Study Classification Module Study Comments 0032,4000 User defined comments about the Study. Table 8-6: MR Image Storage SOP Class - General Series Module Series Date 0008,0021 Date of the scan or reconstruction. Series Time 0008,0031 Modality 0008,0060 Applied value(s): MR Series Description 0008,103E Short description of the scan. Protocol Name 0018,1030 This is the Scan Name. Patient Position 0018,5100 Applied value(s): FFDL, FFDR, FFP, FFS, HFDL, HFDR, HFP, HFS Series Instance UID 0020,000E Series Number 0020,0011 Created dynamically at export. Table 8-7: MR Image Storage SOP Class - Gyroscan Series Module Private Creator Group ,00xx Value Representation = LO, Multiplicity = 1. Contains the Private Creator Identification Code. Applied value(s): PHILIPS-MR-1 Reconstruction Number 0021,xx01 Value Representation = IS, Multiplicity = 1. This is the sequence number of the reconstructions (=series) for a given scan (=acquisition)

21 Sep 99 DICOM Conformance Statement Page 17 of 24 Overview applied MR Image IOD Table 8-8: MR Image Storage SOP Class - Frame of Reference Module Frame of Reference UID 0020,0052 Position Reference Indicator 0020,1040 Has a zero length value. Table 8-9: MR Image Storage SOP Class - General Equipment Module Manufacturer 0008,0070 For locally created images this is Philips Medical Systems. Institution Name 0008,0080 Hospital Name name as configured on the system, for locally created images. Manufacturer's Model Name 0008,1090 For locally created images this is Gyroscan NT. Device Serial Number 0018,1000 For locally created images this is the SRN. Software Version(s) 0018,1020 FOREIGN if non-philips Table 8-10: MR Image Storage SOP Class - General Image Module Image Date 0008,0023 Present if image is part of a dynamic scan. Image Time 0008,0033 Present if image is part of a dynamic scan. Referenced Image Sequence 0008,1140 Planscan information, a maximum of 3 earlier images on which the orientation of the current image has been defined. > Referenced SOP Class UID 0008,1150 Uniquely identifies the referenced SOP Class. > Referenced SOP Instance UID 0008,1155 Uniquely identifies the Referenced SOP Class. Acquisition Number 0020,0012 This is the Scan Number.

22 Page 18 of 24 DICOM Conformance Statement Sep 99 Overview applied MR Image IOD Table 8-10: MR Image Storage SOP Class - General Image Module (Continued) Image Number 0020,0013 Created dynamically at export. Image Comments 0020,4000 User defined comments about the Image. Table 8-11: MR Image Storage SOP Class - Image Plane Module Slice Thickness 0018,0050 Image Position (Patient) 0020,0032 Image Orientation (Patient) 0020,0037 Pixel Spacing 0028,0030 Table 8-12: MR Image Storage SOP Class - Image Pixel Module Samples per Pixel 0028,0002 Applied value(s): 1 Photometric Interpretation 0028,0004 Applied value(s): MONOCHROME2 Rows 0028,0010 This is the Reconstruction Resolution. Columns 0028,0011 This is the Reconstruction Resolution. Bits Allocated 0028,0100 Applied value(s): 16 Bits Stored 0028,0101 Applied value(s): 12, 8 High Bit 0028,0102 Equals Bits Stored - 1 Pixel Representation 0028,0103 Applied Value(s): 0 = unsigned integer. Pixel Data 7FE0,0010

23 Sep 99 DICOM Conformance Statement Page 19 of 24 Overview applied MR Image IOD Table 8-13: MR Image Storage SOP Class - MR Image Module Image Type 0008,0008 Applied value(s): DERIVED, ORIGI- NAL \ PRIMARY, SECONDARY \ DENSITY MAP, OTHER, PHASE MAP, T1 MAP, T2 MAP, VELOCITY MAP \ CR, DERIVED, I, M, P, R, RHO, T1, T2 \ DERIVED, FFE, IR, PCA, SE, SI, US Scanning Sequence 0018,0020 Applied value(s): GR, IR, RM, SE Sequence Variant 0018,0021 Applied value(s): MTC, OTHER Scan Options 0018,0022 Applied value(s): CG, FC, FS, PER, PFP, RG MR Acquisition Type 0018,0023 Applied value(s): 2D, 3D Repetition Time 0018,0080 Echo Time 0018,0081 Inversion Time 0018,0082 Number of Averages 0018,0083 Imaging Frequency 0018,0084 Imaged Nucleus 0018,0085 Applied value(s): 1H, 31P Echo Number(s) 0018,0086 Magnetic Field Strength 0018,0087 Spacing Between Slices 0018,0088 This is the center-to-center distance; do not confuse it with Slice Gap. Number of Phase Encoding Steps 0018,0089 Echo Train Length 0018,0091 This is the Turbo Factor. Percent Sampling 0018,0093 This is the Reduction Factor or Scan Percentage. Percent Phase Field of View 0018,0094 This is the Rectangular FOV. Trigger Time 0018,1060 Present for Scan Options which include triggering (e.g. CG). Low R-R Value 0018,1081 High R-R Value 0018,1082 Intervals Acquired 0018,1083 Intervals Rejected 0018,1084

24 Page 20 of 24 DICOM Conformance Statement Sep 99 Overview applied MR Image IOD Table 8-13: MR Image Storage SOP Class - MR Image Module (Continued) Heart Rate 0018,1088 Heart Rate as established as scan parameter prior to scan. Receiving Coil 0018,1250 Transmitting Coil 0018,1251 Phase Encoding Direction 0018,1312 This is the Preparation Direction or Foldover Direction. Flip Angle 0018,1314 Temporal Position Identifier 0020,0100 Dynamic Scan Number Number of Temporal Positions 0020,0105 No. of Dynamic Scans Table 8-14: MR Image Storage SOP Class - Gyroscan Image Module Private Creator Group ,00xx Value Representation = LO, Multiplicity = 1. Contains the Private Creator Identification Code. Applied value(s): PHILIPS-MR-1 Chemical Shift Number 0019,xx11 Value Representation = IS, Multiplicity = 1. Identifies the chemical shift interval for spectroscopic reconstruction. Phase Number (Philips) 0019,xx12 Value Representation = IS, Multiplicity = 1. Identifies a phase interval of the cardiac cycle. Private Creator Group ,00xx Value Representation = LO, Multiplicity = 1. Contains the Private Creator Identification Code. Applied value(s): PHILIPS-MR-1 Slice Number 0021,xx02 Value Representation = IS, Multiplicity = 1. identifies a slice (=image plane) for an acquisition and/or a reconstruction. Table 8-15: MR Image Storage SOP Class - Modality LUT Module Rescale Intercept 0028,1052 Present if not disabled in Gyroscan configuration file. Rescale Slope 0028,1053 See Rescale Intercept.

25 Sep 99 DICOM Conformance Statement Page 21 of 24 Overview applied MR Image IOD Table 8-15: MR Image Storage SOP Class - Modality LUT Module (Continued) Rescale Type 0028,1054 See Rescale Intercept. Applied value(s): US Table 8-16: MR Image Storage SOP Class - VOI LUT Module Window Center 0028,1050 To be applied after Modality LUT (=Rescaling). Window Width 0028,1051 See Window Center. Table 8-17: MR Image Storage SOP Class - SOP Common Module Specific Character Set 0008,0005 Received from RIS or determined by Gyroscan. Applied value: ISO_IR 100" = Latin alphabet No. 1 supplementary set. Instance Creation Date 0008,0012 Instance Creation Time 0008,0013 Instance Creator UID 0008,0014 SOP Class UID 0008,0016 Applied value(s): SOP Instance UID 0008,0018

26 Page 22 of 24 DICOM Conformance Statement Sep 99 Overview applied Modality Worklist Information Model 9 Overview applied Modality Worklist Information Model This chapter specifies in detail the applied attributes in the C-FIND Service Element of this supported SOP Class. The list of possible values are given (if applicable). Table 9-1: Modality Worklist Information Model - FIND SOP Class - SOP Common Module Specific Character Set 0008,0005 Conditionally present in the Response. Table 9-2: Modality Worklist Information Model - FIND SOP Class - Patient Identification Module Patient s Name 0010,0010 Return key Patient ID 0010,0020 Return key Table 9-3: Modality Worklist Information Model - FIND SOP Class - Patient Demographic Module Patient s Birth Date 0010,0030 Return key Patient s Sex 0010,0040 Return key Patient s Weight 0010,1030 Return key Table 9-4: Modality Worklist Information Model - FIND SOP Class - Scheduled Procedure Step Module Scheduled Procedure Step Sequence 0040,0100 Return key > Scheduled Station AE Title 0040,0001 This attribute serves as Matching Key. The Gyroscan WLM AE Title is used as value. > Scheduled Procedure Step Description 0040,0007 Return key. The value is used as default for Study Description in generated MR Images. > Scheduled Procedure Step ID 0040,0009 Return key

27 Sep 99 DICOM Conformance Statement Page 23 of 24 Overview applied Modality Worklist Information Model Table 9-4: Modality Worklist Information Model - FIND SOP Class - Scheduled Procedure Step Module > Scheduled Procedure Step Status 0040,0020 This attribute may serve as Matching Key. Applied value(s): ARRIVED Table 9-5: Modality Worklist Information Model - FIND SOP Class - Requested Procedure Module Study Instance UID 0020,000D Return key Table 9-6: Modality Worklist Information Model - FIND SOP Class - Imaging Service Request Module Accession Number 0008,0050 Return key Referring Physician s Name 0008,0090 Return key

28 Page 24 of 24 DICOM Conformance Statement Sep 99 Remarks, Implementation restrictions and choices. 10 Remarks, Implementation restrictions and choices. Gyroscan-NT systems are provided with scan protocols that allow for appropriate scanning in case of administration of contrast media like Gadolinium. In general it can not be confirmed that Contrast Medium has indeed been administered, nor at which concentration. At this moment the user interface of the Gyroscan-NT does not allow the user to supply this info yet. However, most users modify the Scan Name (see Table 8-6, MR Image Storage SOP Class - General Series Module, on page 16, under Protocol Name) of the protocols such that on the film or printout it can be recognised that a protocol for contrast has been used. In the future, scanner controlled contrast injectors or added operator control may create the opportunity to provide more detailed contrast information. Matching Data Model. Table 10-1: Matching of the Data Model of the Gyroscan USER Interface to DICOM (Export/RIS) Gyroscan User Interface DICOM (Export/RIS) Table Reference Registration Number Patient ID Table 8-2 on page 14 not visible Study Instance UID Table 8-3 on page 15 Accession Number Accession Number Table 8-3 on page 15 Exam Date Study Date Table 8-3 on page 15 not visible Study ID Table 8-3 on page 15 not visible Scheduled procedure Step ID Table 9-4 on page 22 not visible Series Instance UID Table 8-6 on page 16 not visible Series Number Table 8-6 on page 16 Scan Number Acquisition Number Table 8-10 on page 17 not visible Image Number Table 8-10 on page 17 Image Type (incl. Scanning Sequence) Image Type [4], [5] Table 8-13 on page 19 Reconstruction Number Reconstruction Number Table 8-7 on page 16 Slice Number Slice Number Table 8-14 on page 20 Echo Number Echo Number Table 8-13 on page 19 Phase Number Phase Number Table 8-14 on page 20 Dynamic Scan Number Temporal Position Identifier Table 8-13 on page 19 Chemical Shift Number Chemical Shift Number Table 8-14 on page 20