AGFA MEDICAL IMAGING DICOM Conformance Statement

Transcription

1 MED/RH/ Page 1 of 24 Agfa Medical Imaging 11 September, 2000 AGFA MEDICAL IMAGING DICOM Conformance Statement DICOM Print Server for Digital 400 V1.1 8 September, 2000

2 Page 2 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Document Information Author Editing & Layout For questions regarding the technical content of this document, please contact: Rob Horn Kevin Keller Jeff Yorker tel: +1 (302) fax: +1(302) jeff.yorker.b@us.agfa.com Issued by: Agfa Medical Imaging Connectivity Division 275 North Street Teterboro, NJ USA tel: +1 (201) x3598 fax: +1 (201) patricia lang b@us agfa com Agfa shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this publication. Agfa reserves the right to revise this publication and to make changes to its content at any time, without obligation to notify any person or entity of such revisions and changes. This publication may only be used in connection with the promotion, sales, installation and use of Agfa equipment by Agfa personnel. Copyright September, 00 Agfa Medical Imaging All rights reserved

3 MED/RH/ Page 3 of 24 Agfa Medical Imaging 11 September, 2000 Table of Contents 1 Introduction Intended Audience Integration Validation Future Evolution DICOM Background Purpose of this Document Sources for this Document Implementation Model Application Data Flow Sequencing of Real-World Activities AE Specifications DPS Application Entity Specification Association Establishments Policies General PDU Size Number of Associations Asynchronous Nature Implementation Identifying Information Association Initiation by Real-World Activity Read-World Activity Presentation Context Acceptance Criterion Policy SOP Specific Conformance to Verification SOP Class SOP Specific Conformance to Basic Grayscale Meta SOP Class SOP Specific Conformance to Basic Film Session SOP Class Supported DIMSE Services Supported SOP Class Elements SOP Specific Conformance to Basic Film Box SOP Class Supported DIMSE Services Supported SOP Class Elements Configuration Information CSnnn Perception LUT Window Width and Center Permitted Image Dimensions and Interpolation Image Dimension Smoothing Types SOP Specific Conformance to Grayscale Image Box SOP Class 20

4 Page 4 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Supported DIMSE Services Supported SOP Class Elements SOP Specific Conformance to Annotation SOP Class Supported DIMSE Services Supported SOP Class Elements SOP Specific Conformance to Printer SOP Class Supported DIMSE Services Supported SOP Class Elements Transfer Syntax Selection Policies Communication Profiles TCP/IP Stack Physical Media Support Extensions/Specializations/ Privatizations Configuration Support of Extended Character Sets Acronyms and Abbreviations... 24

5 MED/RH/ Page 5 of 24 Agfa Medical Imaging 11 September, 2000 Revision Record Revision Number Date Author Reason for Change /06/00 Kkeller Initial revision-document converted to Agfa template 1.1 8/9/00 Amorris New conventions implemented

6 Page 6 of 24 MED/RH/ September, 2000 Agfa Medical Imaging 1 INTRODUCTION 1.1 Intended Audience The user of this document is involved with system integration and/or software design. We assume that the reader is familiar with the terminology and concepts that are used in the DICOM 3.0 standard. Readers not familiar with DICOM 3.0 terminology should first read the appropriate parts of the DICOM standard itself, prior to reading this conformance statement. Although the user of this conformance statement, in conjunction with the DICOM 3.0 standard, is intended to facilitate communication with other medical imaging equipment, it is not sufficient to guarantee, by itself, the inter-operation of the connection. The following issues need to be considered: Integration The integration of any device into a system of interconnected devices goes beyond the scope of the DICOM 3.0 standard and this conformance statement, when interoperability is desired. The responsibility for analyzing the applications requirements and developing a solution that integrates the Agfa equipment with other vendors systems is the user s responsibility and should not be underestimated Validation Testing the complete range of possibilities between the Agfa equipment and non-agfa devices, before the connection is declared operational, is deemed to be a necessity. The user should ensure that any non-agfa provider accepts full responsibility for all validation required for their connection with the Agfa equipment. The accuracy of image data once it has crossed the interface between the Agfa equipment and the non-agfa device, as well as the stability of the image data for the intended applications, is the responsibility of the non-agfa provider Future Evolution As the DICOM 3.0 standard evolves to meet the user s growing requirements and to incorporate new features and technologies, Agfa will follow the evolution of the standard. This evolution of the standard may require changes to devices that have implemented DICOM 3.0. The user should ensure that any non-agfa provider, who connects with Agfa devices, also plans future evolution of the DICOM standard. A refusal to do so may reflect in the loss of functionality and/or connectivity between the different products. 1.2 DICOM Background In the 1980s, the American College of Radiology (ACR) and the National Electrical Manufacturer s Association (NEMA) formed a joint committee to develop a standard for Digital Imaging and Communication in Medicine (DICOM). The DICOM standard is developed in conjunction with other standardization organizations, including CEN TC251 in Europe and JIRA in Japan, with review by other organizations, including IEEE HL7 and ANSI in the USA. This standard defines classes of information that are common to many modalities of medical imaging.

7 MED/RH/ Page 7 of 24 Agfa Medical Imaging 11 September, 2000 A requirement of DICOM is to maintain a compliance document that outlines a subset of DICOM services and data classes supported by an application. The purpose of this document is to define a subset of DICOM for the exchange of information with the DICOM Print Server and the printers that it supports. 1.3 Purpose of this Document This document is a provisional DICOM Conformance Statement for the storage services of the DICOM Print Server. The DICOM Print Server will be referred to as the DPS. This document describes the DPS conformance to the ACR-NEMA DICOM (Digital Imaging and Communications in Medicine) standard, and satisfies the DICOM requirement for a vendor conformance specification. The DPS is a protocol converter that accepts DICOM image data input from a network and drives a PostScript Solid Inkjet printer or a Helios HSTP Printer. 1.4 Sources for this Document The following documents contain provisions which, through reference in this text, should be considered to be provisions of this document: ACR NEMA PS 3.1-Part 1: Introduction ACR NEMA PS 3.2-Part 2: Conformance ACR NEMA PS 3.3-Part 3: Information Object Definitions ACR NEMA PS 3.4-Part 4: Service Class Specifications ACR NEMA PS 3.5-Part 5: Data Structures and Encoding ACR NEMA PS 3.6-Part 6: Data Dictionary ACR NEMA PS 3.7-Part 7: Message Exchange ACR NEMA PS 3.8-Part 8: Network Communications Support for Message Exchange

8 Page 8 of 24 MED/RH/ September, 2000 Agfa Medical Imaging 2 IMPLEMENTATION MODEL The Print Management Service Class defines an application-level of class-of-service that facilitates the printing of images and image-related data on a hard copy medium. Figure 2.1 Application data flow diagram. 2.1 Application Data Flow The Film Session Management Process is responsible for acquiring all the information that is required to print the film session. The Film Session is atomic work package of the Print Management Application and contains one or more films related in a user-defined way (e.g. belonging to the same exam, patient) that are originated from one host (e.g. workstation, diagnostic modality) and that are printed on one hard copy printer. Each print job consists of images (pixel data) and print control instructions. The user controls the print job by assigning values to print parameters. Print parameters are defined at film session, film and image. The parameter level determines the scope of operation of the print parameters (e.g. print parameters of the image level are valid for the corresponding image). The inputs of the Film Session Management process are: Set of images and image related data Presentation data that describes the visual look of films. The output of the Film Session Management process is a virtual sheet or sheets, which contain all the information to print the film session. The Print Process prints a film or films, based on the information from the film session. 2.2 Sequencing of Real-World Activities The DPS is used by a modality application that prints film. The printing is available to any modality that can prepare preformatted grayscale images, sheets, and sessions.

9 MED/RH/ Page 9 of 24 Agfa Medical Imaging 11 September, AE SPECIFICATIONS The Application Entity is the Print Management SCP. 3.1 DPS Application Entity Specification The DPS function provides the following DICOM SOPs as an SCP: SOP Class Name SOP Class UID Conformance Level Verification SOP Class Standard Basic Grayscale Print Management Meta SOP Class Standard Basic Film Session SOP Class Standard Basic Gray Image Box SOP Class Standard Printer SOP Class Standard Basic Film Box SOP Class Standard Annotation SOP Class Standard Table 3.1 Supported SOP Classes Association Establishments Policies General PDU Size Maximum PDU size offered: 40,000 bytes Minimum PDU size accepted: 1,024 bytes Maximum PDU size accepted: 1,048,576 bytes (will not send a PDU over 40,000 bytes) Number of Associations There can be four (4) simultaneous associations for the Basic Gray Print Management Meta SOP Class Asynchronous Nature The DPS does not support asynchronous transactions Implementation Identifying Information The following identifying information applies to the DPS 1.4.1: DICOM Application Context Name: Implementation Class UID: Implementation Version Name: 1.4.1E

10 Page 10 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Association Initiation by Real-World Activity Read-World Activity The SCU should initiate an association when it will be printing preformatted grayscale films. This association may be retained as long as it is necessary for the application purposes Presentation Context Acceptance Criterion The DPS function accepts associations with presentation contexts as shown in Table 3.2. Presentation Context Table Abstract Syntax Transfer Syntax Name UID Name List UID List Verification SOP Class Printer SOP Class Basic Grayscale Print Management Meta SOP Class Annotation SOP Class DICOM Implicit VR Little Endian DICOM Explicit VR Little Endian DICOM Explicit VR Big Endian DICOM Implicit VR Little Endian DICOM Explicit VR Little Endian DICOM Explicit VR Big Endian DICOM Implicit VR Little Endian DICOM Explicit VR Little Endian DICOM Explicit VR Big Endian DICOM Implicit VR Little Endian DICOM Explicit VR Little Endian DICOM Explicit VR Big Endian Role SCU SCP SCP SCP Extended Negotiation None None None None Table 3.2 Supported Presentation Contexts and Transfer Syntaxes Policy The DICOM server has service configurable policies that control how the system responds when attributes are invalid. There are three classes of policy: Error (E): Respond with a DICOM error status (e.g. "Invalid Attribute Value") when that attribute value cannot be performed. The determination of what can or cannot be performed is a function of both the actual

11 MED/RH/ Page 11 of 24 Agfa Medical Imaging 11 September, 2000 printing device that was requested, and the previously received DIMSE commands. For example, requesting an 8" x 10" film media on a printer with only 14" x 17" capability is an error. Subsequent DIMSE messages may change the environment such that a previously successful attribute becomes erroneous and vice versa. For example, annotations and images share the same image area. A large image may prevent annotations from fitting on the same film. The order of arrival of DIMSE messages will determine which DIMSE command receives the error. Warning (W): Respond with a DICOM warning status (e.g. "Invalid Attribute Warning, 0x0116). The DICOM server will apply a "best effort" substitution for an attribute value that cannot be performed. For example, a density that cannot be achieved will be printed with the closest achievable density. Silence (S): Respond with the DICOM success and silently apply the "best effort" substitution. This is appropriate for situations where errors or warnings to the host will introduce unnecessary problems. For example, requesting that the output for a Silent Inkjet 400 be placed in the docked processor is an erroneous attribute. There is no value to annoying the operator when the finished sheet will be placed in the obvious location--the exit tray. Note: In the attribute tables below, each attribute indicates what possible policies are available. The site configuration must be consulted to determine the actual configuration. The "best effort" algorithm is discussed in the text associated with each SOP class and attribute SOP Specific Conformance to Verification SOP Class The Printing AE provides Standard Conformance to the Basic Gray Print Management Meta SOP Class as an SCP and as an SCU SOP Specific Conformance to Basic Grayscale Meta SOP Class The Printing AE provides Standard Conformance to the Basic Gray Print Management Meta SOP Class as an SCP. This implies standard conformance for the following: 1. Basic Film Session SOP Class 2. Basic Film Box SOP 3. Basic Grayscale Image Box SOP Class 4. Printer SOP Class. The next sections describe the conformance specifications for each of these SOP Classes.

12 Page 12 of 24 MED/RH/ September, 2000 Agfa Medical Imaging SOP Specific Conformance to Basic Film Session SOP Class Supported DIMSE Services Name Usage Description N-Create M/M Creates the film session N-Set U/M Updates session attribute values N-Delete U/M Deletes the film session N-Action U/U Not supported Table 3.3 DIMSE Services for Basic Film Session. Note: DICOM-specific usage Mandatory (M) and User Option (U) is used in the following tables: Table 3.3, Table 3.4, Table 3.5, Table 3.6, Table 3.11, Table 3.12, Table 3.13, Table 3.14, Table 3.15, and Table Supported SOP Class Elements Name Usage Range Tag Description Policy Number of Copies U/M 1 to 99 (2010,0010) Number of copies to be printed for each film of the film session (1-99, the default is 1). Print Priority Medium Type U/M U/M HIGH MED LOW CLEAR FILM BLUE FILM PAPER Film Destination U/M MAGAZINE PROCESSOR (2000,0020) Default is MED. (2000,0030) The Helios printers do not have a film base color sensor. BLUE vs. CLEAR is up to the operator. Not all printers support paper. (2000,0040) This printer always places finished films in the exit tray. Both values will be interpreted to mean exit tray. Film Session Label U/U (2000,0050) Ignored. S Memory Allocation U/U (2000,0060) Not supported. Table 3.4 Film Session Attributes Supported (N-Create and N-Set). E E W S-default E W S-default S W S-default

13 MED/RH/ Page 13 of 24 Agfa Medical Imaging 11 September, SOP Specific Conformance to Basic Film Box SOP Class Supported DIMSE Services Name Usage Description N-Create M/M Creates the film box N-Set U/U Not supported N-Delete U/M Deletes the film box N-Action M/M PRINT. Should be sent for each sheet of film and at the end of an exam, if one or more images have been transferred into the film box. Table 3.5 DIMSE Services for Basic Film Box.

14 Page 14 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Supported SOP Class Elements Name Usage Range Tag Description Policy Image Display Format Referenced Film Session Sequence Referenced SOP Class UID Referenced SOP Instance UID Film Orientation M/M See Table 3.7 (2010,0010) Type of image display format. Imager capabilities are shown in Table 3.7. M/M (2000,0050) Used M/M (0008,1150) Film Session SOP Class UID E M/M (0008,1155) Referenced Film Instance E U/M PORTRAIT LANDSCAPE (2010,0040) Film orientation; Enumerated Values: PORTRAIT LANDSCAPE E E Film Size ID U/M See Description (2010,0050) Film size identification; Defined Terms: 8INX10IN, E-default 14INX17IN, 10INX12IN, 11INX14IN (film) A, A4, B (paper) S Magnification Type U/M See Description (2010,0060) Interpolation type by which the printer magnifies the image in order to fit the image in the image box on film; Defined Terms: REPLICATE CUBIC BILINEAR NONE E W S-default Min Density U/M (2010,0120) OD of Min density. Out of range values will be shifted to the closest in range value (Density values include base density). Max Density U/M (2010,0130) OD of Max density. Out of range values will be shifted to the closest in range value (Density values include base density). Configuration Information Annotation Display ID Smoothing Type Border Density U/M (2010,0150) See Section S U/U (2010,0030) Permitted when annotation SOP negotiated. U/U U/U SHARP NORMAL SMOOTH Dmin to Dmax BLACK WHITE (2010,0080) Support smoothing types. See Section (2010,0100) Density of the film areas surrounding and between images on the film. E W S-default E W S-default E W S-default E W S-default

15 MED/RH/ Page 15 of 24 Agfa Medical Imaging 11 September, 2000 Name Usage Range Tag Description Policy Empty Image BLACK (2010,0110) Density of the image box area on E Density WHITE the film that contains no image. W S-default Trim U/U Not supported. S Table 3.6 Basic Film Box Attributes Supported for N-Create Configuration Information The Imagers respond to contrast specification items in the Configuration Information field. These specify the film response curves used to convert pixel values to optical density on film CSnnn The DPS software incorporates the ability to specify internal LUTs in a variety of forms. These formats are described in the SIJ Technical Specification. There are one hundred modifiable internal LUTs (numbers 0-99) and nine hundred factory preset internal LUTs ( ). These LUTs can be selected by specifying the filed "CSnnn" in the configuration information value. The corresponding internal LUT will be used for printing Perception LUT The DPS permits specification of LUT parameters in the Configuration Information. The supported values are: PERCEPTION_LUT=LINEAR - a LUT that is linear in OD is used. PERCEPTION_LUT=KAMAMORI - a Kanamori LUT is used. PERCEPTION_LUT=n - a modified Kanamori LUT is used, controlled by n. n must be in the range n=100 is the exact Kanamori, n=200 is the exact Linear, 75<n<100 hyper kanamori, 100<n<200 intermediate, 200<n<225 hypo-kanamori. Note: The presence of a PERCEPTION_LUT field will override any CSnnn field that may also be present Window Width and Center If present, these specify default values that correspond to the attributes Window Center (0028,1050) and Window Width (0028,1051) in the image module. Any image module received as part of a Preformatted Grayscale Image Sequence (2020,0110) that is lacking these two attributes will have these values used. Both values must be present to have an effect. If one is missing, the other is ignored. The string contents xx and yy are the ISO 8859 numerical representation of the values that would have been encoded in Window Center (0028,1050) and Window Width (0028,1051): WINDOW_WIDTH=xx\WINDOW_CENTER=yy.

16 Page 16 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Permitted Image Dimensions and Interpolation The available film and paper formats are a function of the policy set by Service. Table 3.7 provides the orientations, formats and approximate pixel dimensions for all film sizes. Table 3.8 shows the maximum allowable physical size for an image on film in each orientation and format. Table 3.8 and Table 3.10 show the corresponding layouts and physical image sizes for studies printed on paper. The DPS will select the maximum allowable physical image size unless the Film Box extension for the Requested Image Size (2020,0030) is provided. The DPS will apply the constraints of the selected imager during the N-Set and N-Create operations. The actual available space is affected by whether Annotations are used. The tables below assume that no annotation boxes are printed on the film. The DPS supports from zero to four lines of annotations at the bottom of the film, below the image area. Each annotation line consumes 60 pixels, which are taken from the vertical dimension of the image area. When annotations are printed, the image area is re-scaled, maintaining the aspect ratio of the image area, to accommodate the number of lines of annotations requested. Note: The Imagers will interpolate image data to fit within the physical image.

17 MED/RH/ Page 17 of 24 Agfa Medical Imaging 11 September, Image Dimension Film Size Orientation DICOM Name 8" x 10" 10" x 12" 11" x 14" 14" x 17" PORTRAIT STANDARD\1, STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, LANDSCAPE STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, Table 3.7 Image Dimensions (in pixels) for Solid Inkjet Film Sizes Formats.

18 Page 18 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Film Size Orientation DICOM Name 8" x 10" 10" x 12" 11" x 14" 14" x 17" PORTRAIT STANDARD\1, STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, LANDSCAPE STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, Table 3.8 Image Dimensions (in mm) for Solid Inkjet Film Sizes.

19 MED/RH/ Page 19 of 24 Agfa Medical Imaging 11 September, 2000 Orientation DICOM Name Digital 200 Digital 400 Helios Model 1417 Xmax Ymax Xmax Ymax Xmax Ymax PORTRAIT STANDARD\1, STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, LANDSCAPE STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, Table 3.9 Image Dimensions (in pixels) for Digital 200/400 and Helios Model Orientation DICOM Name Digital 200 Digital 400 Helios Model 1417 Ximage Yimage Ximage Yimage Ximage Yimage PORTRAIT STANDARD\1, STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, STANDARD\3, STANDARD\4, STANDARD\4, STANDARD\4, LANDSCAPE STANDARD\1, STANDARD\2, STANDARD\2, STANDARD\3, STANDARD\3, Table 3.10 Image Dimensions (in mm) for Digital 200/400 and Helios Model 1417.

20 Page 20 of 24 MED/RH/ September, 2000 Agfa Medical Imaging Smoothing Types The numeric smoothing types are translated into one of the four interpolation and smoothing types supported by the DPS. These are bilinear, smooth cubic, normal cubic, and sharp cubic. The numeric smoothing types are assigned ranges: sharp, normal, smooth SOP Specific Conformance to Grayscale Image Box SOP Class Supported DIMSE Services Name Usage Description N-Set M/M An image box instance is created by the SCP for each potential image of the film box. Only the instances that will actually contain images will be updated with N-Set message. Table 3.11 DIMSE Services Supported for Grayscale Image Box.

21 MED/RH/ Page 21 of 24 Agfa Medical Imaging 11 September, Supported SOP Class Elements Name Usage Range Tag Description Policy Image Position M/M (2020,0010) Image Location. E Preformatted Grayscale Image Sequence M/M (2020,0110) E Samples/pixel M/M 1 (0028,0002) Must be 1. E Photometric Interpretation M/M (0028,0004) Supported. E Rows M/M See Table 3.7 and Table 3.9 Columns M/M See Table 3.7 and Table 3.9 (0028,0010) Rows of data for this image. E (0028,0011) Columns of data for this image. E Pixel Aspect Ratio M/M (0028,0034) W S-default Bits Allocated M/M 8,16 (0028,0100) E Bits Stored M/M 8,10,12 (0028,0101) Digital 200, Solid Inkjet 400 truncate to 8-bits before printing. E High Bit M/M 7,9,11 (0028,0102) E Pixel Representation M/M 0 (0028,0103) Unsigned pixel values. E Window Center U/U (0028,1050) S Window Width U/U (0028,1051) S Pixel Data M/M (7FE0,0010) Supported E Polarity U/M (2020,0020) Supported E Image Size U/U See Table 3.8 and Table 3.10 Referenced Overlay Sequence (2020,0030) Size of a printed image in mm U/U (2040,0010) Not supported Magnification Type U/U (2010,0060) Not supported Smoothing Type U/U (2010,0080) Not supported Table 3.12 Attributes supported for Grayscale Image Box for N-Set. E-default W The best effort algorithm for requested image size depends on the nature of the reason for failure. If the cause of failure is that the requested image size exceeds the available film size, the first step is the selection of either cropping the image, or overriding the requested film size: When the format is STANDARD\1,1, the image is centered and cropped to preserve the ratio between image pixel dimensions and requested image size. This has the effect of maintaining the physical film spacing of pixels that was requested, and causes the loss of the border areas of the image. When the format is not STANDARD\1,1, the requested image size is replaced with the largest available film size, while preserving aspect ratio. If, after cropping or changing image size, the resulting image has an image pixel spacing that is less than the printer's pixel spacing, the image is still rejected as an error.

22 Page 22 of 24 MED/RH/ September, 2000 Agfa Medical Imaging The attribute pair Window Center (0028,1050) and Window Width (0028,1051) is optional. They must either both be present, or neither. If only one is present, it will be ignored SOP Specific Conformance to Annotation SOP Class Supported DIMSE Services Name Usage Description N-Set U/M Table 3.13 DIMSE Services supported for Annotation SOP Supported SOP Class Elements Name Usage Range Tag Description Annotation Field U/M Text Table 3.14 DIMSE Supported SOP Class Elements. Annotation Fields are located below the image area and share imageable pixel area with the image matrix. There shall be twelve annotation locations, corresponding to four lines of annotation areas on each line (left, center, and right). The annotation areas shall be justified to be left flush, centered, and right flush. The annotation text lines are approximately 6 mm high (12 point). Any annotation field that is left unassigned shall be printed as blank except when all three annotation fields on a line are unassigned. In that case, the line is not printed, surrounding annotation lines are shifted, and the annotation area is released for use as part of the image matrix SOP Specific Conformance to Printer SOP Class Supported DIMSE Services Name Usage Description N-Event-Report M/M N-Get U/M Table 3.15 DIMSE Services supported for Printer SOP.

23 MED/RH/ Page 23 of 24 Agfa Medical Imaging 11 September, Supported SOP Class Elements Name Usage Range Tag Description Printer Status U/M NORMAL (2010,0010) Warning and Failure are reported to user. WARNING FAILURE Printer Status Info U/M See Table 3.17 (2110,0020) Reported to user. Supply low is not sensed. Printer Name U/M (2110,0030) Included in reports to user. Manufacturer U/U (0008,0070) Included in reports to user. Model Name U/U (0008,1090) Included in reports to user. Table 3.16 Supported SOP Class Elements. The Printer Status Info is one of the status codes from the following Table: Print Status Information Status Codes NORMAL EMPTY 10X12 CALIBRATING FINISHER EMPTY EMPTY INK INK LOW SUPPLY EMPTY FINISHER ERROR CHECK PRINTER PRINTER DOWN FILM JAM UNKNOWN IO ERROR NOT RESPONDING EMPTY PAPER EMPTY 8X10 PRINTER OFFLINE EMPTY 14X17 FINISHER LOW EMPTY 11X14 Table 3.17 Printer Status Information. In the situation where more than one status code applies, the status code is selected based on the likely ability of an operator to clear the problem. For example, if there is both a jam and an ink low, the ink low will be reported. This supports contained operation of demux configurations, where there are multiple printing devices configured as output for a single AE title Transfer Syntax Selection Policies The DPS supports only the Little Endian Implicit transfer syntax , Little Endian Explicit VR " ", and Big Endian Explicit VR " for all presentation contexts. 4 COMMUNICATION PROFILES 4.1 TCP/IP Stack The TCP/IP protocol will be used. TCP/IP ports are service-configurable. The normal assignment is to listen on port 104. The DPS offers a TCP window of 40,000 bytes to improve performance on busy or long distance communications. 4.2 Physical Media Support The DPS directly supports 10-baseT and 100-baseT Ethernet. Other media require conversion by appropriate router or bridge hardware to Ethernet.

24 Page 24 of 24 MED/RH/ September, 2000 Agfa Medical Imaging 5 EXTENSIONS/SPECIALIZATIONS/ PRIVATIZATIONS Not applicable. 6 CONFIGURATION Not applicable. 7 SUPPORT OF EXTENDED CHARACTER SETS Not applicable. 8 ACRONYMS AND ABBREVIATIONS ACR American College of Radiology AE Application Entity ANSI American National Standards Institute CEN TC251 Comité Européen de Normalisation-Technical Committee 251-Medical Informatics DICOM Digital Imaging and Communications in Medicine DIMSE DICOM Message Service Element DPS DICOM Print Server E Error HL7 Health Level 7 HSTP Helios Sheet Transfer Protocol IEEE Institute of Electrical and Electronics Engineers ISO International Standards Organization JIRA Japanese Industry Radiology Apparatus LUT Look Up Table M Mandatory NEMA National Electrical Manufacturers Association PDU Protocol Data Unit S Silence SCP Service Class Provider SCU Service Class User SIJ Solid Inkjet SOP Service-Object Pair 100-baseT Fast Ethernet interface standard TCP/IP Transmission Control Protocol/Internet Protocol U User Option UID Unique Identifier USA United States of America VR Value Representation W Warning