1、TECHNICALREPORTIEC61852First edition1998-04Medical electrical equipment Digital imaging and communicationsin medicine (DICOM) Radiotherapy objectsReference numberIEC 61852:1998(E)Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction o
2、r networking permitted without license from IHS-,-NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.Consolidated publicationsConsolidated versions of some IEC publications including amendments areavailable. For example, edition numbers 1.0, 1.1 and
3、 1.2 refer, respectively, to thebase publication, the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content refl
4、ects current technology.Information relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjects under consideration and work in progress undertaken bythe technical committee which has prepared this publication, as well as the list ofpubl
5、ications issued, is to be found at the following IEC sources: IEC web site* Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)* IEC BulletinAvailable both at the IEC web site* and as a printed periodicalTerminology, graphical and lettersymbolsFor general terminolog
6、y, readers are referred to IEC 60050: InternationalElectrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC forgeneral use, readers are referred to publications IEC 60027: Letter symbols to beused in electrical technology, IEC 60417: Graphical symbol
7、s for use on equipment.Index, survey and compilation of the single sheets and IEC 60617: Graphical symbolsfor diagrams.* See web site address on title page.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted
8、without license from IHS-,-TECHNICALREPORT TYPE 3IEC61852First edition1998-04Medical electrical equipment Digital imaging and communicationsin medicine (DICOM) Radiotherapy objectsCommission Electrotechnique InternationaleInternational Electrotechnical CommissionPRICE CODE IEC 1998 Copyright - all r
9、ights reservedNo part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writing from the publisher.International Electrotechnical Commission 3, rue de Varemb Geneva, SwitzerlandTelefax:
10、+41 22 919 0300 e-mail: inmailiec.ch IEC web site http: /www.iec.chXFor price, see current catalogueCopyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,- 2 61852 IEC:1998(E)CONTENTSP
11、ageFOREWORD . 3INTRODUCTION . 5ClauseScope 6A.U RT IMAGE INFORMATION OBJECT DEFINITION 11A.U.1 RT Image IOD Description 11A.U.2 RT Image IOD entity-relationship model 11A.U.3 RT Image IOD Module Table . 12A.V RT DOSE INFORMATION OBJECT DEFINITION 13A.V.1 RT Dose IOD Description 13A.V.2 RT dose IOD e
12、ntity-relationship model 13A.V.3 RT dose IOD Module Table . 14A.W RT STRUCTURE SET INFORMATION OBJECT DEFINITION. 14A.W.1 RT structure set IOD description . 14A.W.2 RT Structure Set IOD entity-relationship model 15A.W.3 RT Structure Set IOD Module Table 15A.X RT PLAN INFORMATION OBJECT DEFINITION. 1
13、6A.X.1 RT Plan IOD Description . 16A.X.2 RT Plan IOD entity-relationship model . 16A.X.3 RT Plan IOD Module Table 17C.7.3.1.1.1 Modality 18C.8.X Radiotherapy. 18C.8.X.1 RT Series Module 18C.8.X.2 RT Image Module 20C.8.X.3 RT Dose Module 27C.8.X.4 RT DVH Module 31C.8.X.5 Structure Set Module. 33C.8.X
14、.6 ROI Contour Module 36C.8.X.7 RT Dose ROI Module. 38C.8.X.8 RT ROI Observations Module 39C.8.X.9 RT General Plan Module 42C.8.X.10 RT Prescription Module . 44C.8.X.11 RT Tolerance Tables Module . 46C.8.X.12 RT Patient Setup Module . 48C.8.X.13 RT Fraction Scheme Module 50C.8.X.14 RT Beams Module .
15、 54C.8.X.15 RT Brachy Application Setups Module 68C.8.X.16 Approval Module 78Part 4 Addendum Radiotherapy Storage SOP Classes . 79B.5 STANDARD SOP CLASSES . 79Part 6 Addendum Radiotherapy Data Dictionary. 80Copyright International Electrotechnical Commission Provided by IHS under license with IECNot
16、 for ResaleNo reproduction or networking permitted without license from IHS-,-61852 IEC:1998(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSIONMEDICAL ELECTRICAL EQUIPMENT DIGITAL IMAGING AND COMMUNICATIONS IN MEDICINE (DICOM) RADIOTHERAPY OBJECTSFOREWORD1) The IEC (International Electrotechnical Commis
17、sion) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in add
18、ition to other activities, the IEC publishes International Standards. Their preparation isentrusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisin
19、gwith the IEC also participate in this preparation. The IEC collaborates closely with the International Organizationfor Standardization (ISO) in accordance with conditions determined by agreement between the twoorganizations.2) The formal decisions or agreements of the IEC on technical matters expre
20、ss, as nearly as possible, aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3) The documents produced have the form of recommendations for international use and are published in the formof standards
21、, technical reports or guides and they are accepted by the National Committees in that sense.4) In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards.
22、Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standa
23、rds.6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subjectof patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.The main task of IEC technical committees is to prepare International Standard
24、s. Inexceptional circumstances, a technical committee may propose the publication of a technicalreport of one of the following types: type 1, when the required support cannot be obtained for the publication of anInternational Standard, despite repeated efforts; type 2, when the subject is still unde
25、r technical development or where for any otherreason there is the future but no immediate possibility of an agreement on an InternationalStandard; type 3, when a technical committee has collected data of a different kind from thatwhich is normally published as an International Standard, for example
26、“state of the art“.Technical reports of types 1 and 2 are subject to review within three years of publication todecide whether they can be transformed into International Standards. Technical reports oftype 3 do not necessarily have to be reviewed until the data they provide are considered to beno lo
27、nger valid or useful.IEC 61852, which is a technical report of type 3, has been prepared by subcommittee 62C:Equipment for radiotherapy, nuclear medicine and radiation dosimetry, of IEC technicalcommittee 62: Electrical equipment in medical practice.Copyright International Electrotechnical Commissio
28、n Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,- 4 61852 IEC:1998(E)The text of this technical report is based on the following documents:Committee draft Report on voting62C/183/CDV 62C/201A/RVCFull information on the voting fo
29、r the approval of this technical report can be found in the reporton voting indicated in the above table.This report has been developed in conjunction with IEC subcommittee 62C, CEN TC251 andthe AAPM.ACR (the American College of Radiology) and NEMA (the National Electrical ManufacturersAssociation)
30、formed a joint committee to develop a standard for digital imaging andcommunications in medicine. This DICOM standard was developed according to the NEMAProcedures.This report is supplement 11 to the DICOM standard. It is an extension to Part 3, 4 and 6 of thepublished DICOM standard which consists
31、of the following parts:Part 1 Introduction and OverviewPart 2 ConformancePart 3 Information Object DefinitionsPart 4 Service Class SpecificationsPart 5 Data Structures and EncodingPart 6 Data DictionaryPart 7 Message ExchangePart 8 Network Communication Support for Message ExchangePart 9 Point-to-Po
32、int Communication Support for Message ExchangePart 10 Media Storage and File FormatPart 11 Media Storage Application ProfilesPart 12 Media Formats and Physical MediaPart 13 Print Management Point-to-Point Communication SupportThese parts are independent but related documents. Their development level
33、 and approvalstatus may differ. Additional parts may be added to this multi-part standard. PS3.1 should beused as the base reference for the current parts of this standard.A bilingual version of this technical report may be issued at a later date.Copyright International Electrotechnical Commission P
34、rovided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-61852 IEC:1998(E) 5 INTRODUCTIONThis supplement to the DICOM Standard defines a number of information objects applicable tothe domain of radiation oncology. The intent of these objec
35、ts is to support the transfer ofradiotherapy-related data between devices found within and outside a radiotherapy department.They are not, however, intended to support the management of the transferred data, a functionwhich may be addressed in future revisions of the DICOM Standard.This task of proc
36、ess management has not been addressed in the current draft due to theabsence of a consistent process model for a radiotherapy department, especially in aninternational context. As a result, the radiotherapy information objects contain a large numberof conditional and optional data elements. Essentia
37、lly the objects are intended to be used as“containers” for related radiotherapy data, with data being added as the object flows throughthe department.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted withou
38、t license from IHS-,- 6 61852 IEC:1998(E)MEDICAL ELECTRICAL EQUIPMENT DIGITAL IMAGING AND COMMUNICATIONS IN MEDICINE (DICOM) RADIOTHERAPY OBJECTSThe following text extends and/or amends Part 3 of DICOM.Part 3: Addendum radiotherapy information object definitions1 ScopeThis report specifies the follo
39、wing information objects:1) A DICOM Image Information Object for Radiotherapy. It specifies the semantic content ofRT Images. It is commonly abbreviated to the RT Image IOD. It also includes thecorresponding Storage SOP Class so that this IOD can be used in Network and MediaStorage exchanges. The sc
40、ope of the RT Image IOD is radiotherapy images which havebeen obtained on a conic imaging geometry, such as that found on conventional simulatorsand portal imaging devices. It can also be used for calculated images using the samegeometry, such as digitally reconstructed radiographs (DRRs).2) A DICOM
41、 Dose Information Object for Radiotherapy. It specifies the semantic content of RTDoses. It is commonly abbreviated to the RT Dose IOD. It also includes the correspondingStorage SOP Class so that this IOD can be used in Network and Media Storage exchanges.The scope of the RT Dose IOD is radiotherapy
42、 dose distributions which have beencalculated on a radiotherapy treatment planning system, represented as two- or three-dimensional dose grids, groups of named or unnamed dose points, isodose curves, anddose-volume histograms (DVHs).3) A DICOM Structure Set Information Object for Radiotherapy. It sp
43、ecifies the semanticcontent of RT Structure Sets. It is commonly abbreviated to the RT Structure Set IOD. Italso includes the corresponding Storage SOP Class so that this IOD can be used inNetwork and Media Storage exchanges. The scope of the RT Structure Set IOD isradiotherapy patient-related struc
44、tures which have been identified on devices such as CTscanners, virtual simulation workstations, or treatment planning systems.4) A DICOM Plan Information Object for Radiotherapy. It specifies the semantic content of RT(Treatment) Plans. It is commonly abbreviated to the RT Plan IOD. It also include
45、s thecorresponding Storage SOP Class so that this IOD can be used in Network and MediaStorage exchanges. The scope of the RT Plan IOD is geometric and dosimetric dataspecifying a course of external beam and/or brachytherapy treatment.This report includes a number of addenda to existing Parts of DICO
46、M; therefore the readershould have a working understanding of the Standard.1. Part 3 Addenda (Extension to the body, Annex A, B, C and D)2. Part 4 Addenda (Extension to Annex B)3. Part 6 Addenda (Extension to Section 6 and Annex A)Add to Section 22 Normative referencesIEC 61217:1996, Radiotherapy eq
47、uipment Coordinates, movements and scalesICRU Report 50, Prescribing, Recording, and Reporting Photon Beam Therapy, InternationalCommission on Radiation Units and Measurements, 1993Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction
48、 or networking permitted without license from IHS-,-61852 IEC:1998(E) 7 After Section 3.8 add the following:3.X RadiotherapyThis part of the standard is based on the concepts developed in IEC 61217 and makes use ofthe following terms defined in it:a) FIXED REFERENCE systemb) GANTRY systemc) BEAM LIM
49、ITING DEVICE systemd) WEDGE FILTER systeme) X-RAY IMAGE RECEPTOR systemf) PATIENT SUPPORT systemg) TABLE TOP ECCENTRIC systemh) TABLE TOP systemIn Section 4 add the following:4 Symbols and abbreviationsBEV Beams-eye viewBrachy BrachytherapyCC Counter-clockwiseCTV Clinical target volumeCW ClockwiseDRR Digitally-reconstruct
