IEC_62220-1-2013.pdf

INTERNATIONALSTANDARDIEC62220-1First edition2003-10Medical electrical equipment Characteristics of digital X-ray imaging devices Part 1:Determination of the detective quantumefficiencyAppareils lectromdicaux Caractristiques des appareils dimagerie rayonnement X Partie 1:Dtermination de lefficacit quantique de dtectionReference numberIEC 62220-1:2003(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC62220-1First edition2003-10Medical electrical equipment Characteristics of digital X-ray imaging devices Part 1:Determination of the detective quantumefficiencyAppareils lectromdicaux Caractristiques des appareils dimagerie rayonnement X Partie 1:Dtermination de lefficacit quantique de dtection IEC 2003 Copyright-all rights 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,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chUFor price,see current cataloguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62220-1 IEC:2003(E)CONTENTSFOREWORD.3INTRODUCTION.51Scope.62Normative references.63Terminology and definitions.74Requirements.84.1Operating conditions.84.2X-RAY EQUIPMENT.84.3RADIATION QUALITY.94.4TEST DEVICE.104.5Geometry.114.6IRRADIATION conditions.134.6.1General conditions.134.6.2Exposure measurement.134.6.3Avoidance of LAG EFFECTS.144.6.4IRRADIATION to obtain the CONVERSION FUNCTION.144.6.5IRRADIATION for determination of the NOISE POWER SPECTRUM.144.6.6IRRADIATION with TEST DEVICE in the RADIATION BEAM.155Corrections of RAW DATA.166Determination of the DETECTIVE QUANTUM EFFICIENCY.166.1Definition and formula of DQE(u,v).166.2Parameters to be used for evaluation.176.3Determination of different parameters from the images.176.3.1Linearization of data.176.3.2The NOISE POWER SPECTRUM(NPS).186.3.3Determination of the MODULATION TRANSFER FUNCTION(MTF).207Format of conformance statement.208Accuracy.21Annex A(normative)Determination of LAG EFFECTS.23A.1Test of additive LAG EFFECTS.23A.2Test of multiplicative LAG EFFECTS.24Annex B(normative)Terminology Index of defined terms.26Annex C(informative)Calculation of the input NOISE POWER SPECTRUM.27Bibliography.28LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62220-1 IEC:2003(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_MEDICAL ELECTRICAL EQUIPMENT CHARACTERISTICS OF DIGITAL X-RAY IMAGING DEVICES Part 1:Determination of the detective quantum efficiencyFOREWORD1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprisingall national electrotechnical commi