1、INTERNATIONALSTANDARDIEC61223-2-9First edition1999-09Evaluation and routine testing inmedical imaging departments Part 2-9:Constancy tests Equipment for indirect radioscopyand indirect radiographyEssais dvaluation et de routine dansles services dimagerie mdicale Partie 2-9:Essais de constance Dispos
2、itifs de radioscopie et de radiographie indirectesReference numberIEC 61223-2-9:1999(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 serie
3、s.Consolidated publicationsConsolidated versions of some IEC publications including amendments areavailable.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to thebase publication,the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Va
4、lidity of this publicationThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjec
5、ts under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is to be found at the following IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue
6、)*IEC BulletinAvailable both at the IEC web site*and as a printed periodicalTerminology,graphical and letter symbolsFor general terminology,readers are referred to IEC 60050:InternationalElectrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signs approved by the IEC forgenera
7、l use,readers are referred to publications IEC 60027:Letter symbols to beused in electrical technology,IEC 60417:Graphical symbols 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.LICENSED TO MECON
8、Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC61223-2-9First edition1999-09Evaluation and routine testing inmedical imaging departments Part 2-9:Constancy tests Equipment for indirect radioscopyand indirect radiographyEssais dv
9、aluation et de routine dansles services dimagerie mdicale Partie 2-9:Essais de constance Dispositifs de radioscopie et de radiographie indirectesPRICE CODE IEC 1999 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechani
10、cal,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chSFor price,see current catalogue Commission Electrotechnique In
11、ternationale International Electrotechnical CommissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61223-2-9 IEC:1999(E)CONTENTSPageFOREWORD.3Clause1Scope and object.51.1Scope.51.2Object.52Normative references.63Terminology.73.1De
12、gree of requirements.73.2Use of terms.74General aspects of CONSTANCY TESTS.74.1General conditions affecting test procedures.84.2Establishment of BASELINE VALUES.84.3Frequency of CONSTANCY TESTS.84.4Identification of equipment,instrumentation and test conditions.84.5Measured functional parameters.95P
13、erformance tests.105.1RADIATION output from the X-RAY SOURCE ASSEMBLY.105.2Grey-scale image and AUTOMATIC INTENSITY CONTROL.115.3Threshold contrast for detail of large size.135.4Limiting resolution for detail of high contrast for X-RADIATION.135.5Frequency of CONSTANCY TESTS.146Statement of complian
14、ce.15Annex A(normative)Terminology Index of defined terms.16Annex B(informative)Example of a form for the standardized test report.18Annex C(informative)Guidance on action to be taken.19Annex D(normative)PHANTOMS and TEST DEVICES.20LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS
15、LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61223-2-9 IEC:1999(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_EVALUATION AND ROUTINE TESTING IN MEDICAL IMAGING DEPARTMENTS Part 2-9:Constancy tests Equipment for indirect radioscopy and indirect radiographyFOREWORD1)The IEC(International Electrotechni
16、cal Commission)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 addition to other activities,the IEC publishes International Standards.Their preparation isentrusted to technical committees;any IEC National Committee interested in the subject dealt with mayparti