IEC-62220-1-2003.pdf
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1、INTERNATIONAL STANDARD IEC 62220-1 First edition 2003-10 Medical electrical equipment Characteristics of digital X-ray imaging devices Part 1: Determination of the detective quantum efficiency Appareils lectromdicaux Caractristiques des appareils dimagerie rayonnement X Partie 1: Dtermination de lef
2、ficacit quantique de dtection Reference number IEC 62220-1:2003(E) Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 04:49:03 MSTNo reproduction or networking permitted without lic
3、ense from IHS -,-,- 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, ed
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9、: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 04:49:03 MSTNo reproduction or networking permitted without li
10、cense from IHS -,-,- INTERNATIONAL STANDARD IEC 62220-1 First edition 2003-10 Medical electrical equipment Characteristics of digital X-ray imaging devices Part 1: Determination of the detective quantum efficiency Appareils lectromdicaux Caractristiques des appareils dimagerie rayonnement X Partie 1
11、: Dtermination de lefficacit quantique de dtection IEC 2003 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Interna
12、tional Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch U For price, see current catalogue PRICE CODE Commission Electrotechnique Internationale International Electrote
13、chnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 04:49:03 MSTNo reproduction or networking permitted without license from IHS -,-,- 2 62220-1 IEC:2003(E) CONTEN
14、TS FOREWORD 3 INTRODUCTION 5 1Scope 6 2Normative references. 6 3Terminology and definitions . 7 4Requirements 8 4.1Operating conditions. 8 4.2X-RAY EQUIPMENT 8 4.3RADIATION QUALITY 9 4.4TEST DEVICE.10 4.5Geometry.11 4.6IRRADIATION conditions.13 4.6.1General conditions.13 4.6.2Exposure measurement .1
15、3 4.6.3Avoidance of LAG EFFECTS14 4.6.4IRRADIATION to obtain the CONVERSION FUNCTION.14 4.6.5IRRADIATION for determination of the NOISE POWER SPECTRUM14 4.6.6IRRADIATION with TEST DEVICE in the RADIATION BEAM.15 5Corrections of RAW DATA.16 6Determination of the DETECTIVE QUANTUM EFFICIENCY.16 6.1Def
16、inition and formula of DQE(u,v) .16 6.2Parameters to be used for evaluation 17 6.3Determination of different parameters from the images17 6.3.1Linearization of data 17 6.3.2The NOISE POWER SPECTRUM (NPS).18 6.3.3Determination of the MODULATION TRANSFER FUNCTION (MTF)20 7Format of conformance stateme
17、nt.20 8Accuracy.21 Annex A (normative) Determination of LAG EFFECTS23 A.1Test of additive LAG EFFECTS23 A.2Test of multiplicative LAG EFFECTS24 Annex B (normative) Terminology Index of defined terms26 Annex C (informative) Calculation of the input NOISE POWER SPECTRUM.27 Bibliography28 Copyright Int
18、ernational Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 04:49:03 MSTNo reproduction or networking permitted without license from IHS -,-,- 62220-1 IEC:2003(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISS
19、ION _ MEDICAL ELECTRICAL EQUIPMENT CHARACTERISTICS OF DIGITAL X-RAY IMAGING DEVICES Part 1: Determination of the detective quantum efficiency FOREWORD 1)The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical commit
20、tees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical
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