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1、Mai 2006 May 2006 CEI 60336 (Quatrime dition 2005) IEC 60336 (Fourth edition 2005) Appareils lectromdicaux Gaines quipes pour diagnostic mdical Caractristiques des foyers Medical electrical equipment X-ray tube assemblies for medical diagnosis Characteristics of focal spots CORRIGENDUM 1 Page 60 Ann
2、exe B Dans la seconde phrase du troisime alina: Au lieu de: o la pente diffre de 1 % avec une tolrance de moins de 5 %. lire: o la pente diffre de 1 avec une tolrance de moins de 5 %. Page 61 Annex B In the second sentence of the third paragraph: Instead of: “where the slope differs from 1 % by less
3、 than 5 %.” read: “where the slope differs from 1 by less than 5 %.” Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=NASA Technical Standards 1/9972545001 Not for Resale, 05/07/2007 21:55:22 MDTNo reproduction or networking permitted without license
4、 from IHS -,-,- NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60336 Quatrime dition Fourth edition 2005-04 Appareils lectromdicaux Gaines quipes pour diagnostic mdical Caractristiques des foyers Medical electrical equipment X-ray tube assemblies for medical diagnosis Characteristics of focal s
5、pots Numro de rfrence Reference number CEI/IEC 60336:2005 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from
6、 IHS -,-,- Numrotation des publications Depuis le 1er janvier 1997, les publications de la CEI sont numrotes partir de 60000. Ainsi, la CEI 34-1 devient la CEI 60034-1. Editions consolides Les versions consolides de certaines publications de la CEI incorporant les amendements sont disponibles. Par e
7、xemple, les numros ddition 1.0, 1.1 et 1.2 indiquent respectivement la publication de base, la publication de base incorporant lamendement 1, et la publication de base incorporant les amendements 1 et 2. Informations supplmentaires sur les publications de la CEI Le contenu technique des publications
8、 de la CEI est constamment revu par la CEI afin quil reflte ltat actuel de la technique. Des renseignements relatifs cette publication, y compris sa validit, sont dispo- nibles dans le Catalogue des publications de la CEI (voir ci-dessous) en plus des nouvelles ditions, amendements et corrigenda. De
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12、lients Si vous avez des questions au sujet de cette publication ou avez besoin de renseignements supplmentaires, prenez contact avec le Service clients: Email: custserviec.ch Tl: +41 22 919 02 11 Fax: +41 22 919 03 00 Publication numbering As from 1 January 1997 all IEC publications are issued with
13、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 inco
14、rporating 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 public
15、ation, 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
16、 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
17、 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 S
18、ervice 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 . Copyright International Electrot
19、echnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from IHS -,-,- NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60336 Quatrime dition Fourt
20、h edition 2005-04 Appareils lectromdicaux Gaines quipes pour diagnostic mdical Caractristiques des foyers Medical electrical equipment X-ray tube assemblies for medical diagnosis Characteristics of focal spots Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2005 Droits de r
21、eproduction rservs Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. No part of this publication may
22、 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. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 1
23、1 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch CODE PRIX PRICE CODE W Commission Electrotechnique Internationale International Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, Us
24、er=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 60336 CEI:2005 SOMMAIRE AVANT-PROPOS6 1 Domaine dapplication 10 2 Rfrences normatives.10 3 Termes et dfinitions10 4 Dterminations pour lvaluation des caractristiques des FO
25、YERS10 4.1 Indication des caractristiques des FOYERS.10 4.2 Axe longitudinal de la GAINE QUIPE.10 4.3 AXE DE RFRENCE de la GAINE QUIPE12 4.4 Direction dvaluation de la longueur du FOYER.12 4.5 Direction dvaluation de lpaisseur du FOYER12 5 Montage de la camra du FOYER.12 5.1 Vue densemble.12 5.2 App
26、areillage dessai 12 5.3 Dispositions dessai.16 5.4 Incertitude totale du montage de la camra.22 6 Ralisation des RADIOGRAMMES.22 6.1 Vue densemble.22 6.2 Procdure dessai .22 6.3 Ralisation de RADIOGRAMMES FENTE ou de RADIOGRAMMES STNOP24 6.4 Dclaration de conformit26 7 Dtermination de la FONCTION DE
27、 DISTRIBUTION LINAIRE26 7.1 Vue densemble.26 7.2 Appareillage et dispositions de mesure .26 7.3 Mesure de la rpartition de la densit optique .28 7.4 Dtermination de la FONCTION DE DISTRIBUTION LINAIRE.28 7.5 Dclaration de conformit28 8 Dtermination des dimensions du FOYER30 8.1 Vue densemble.30 8.2
28、Mesure et dtermination30 8.3 VALEURS NOMINALES DU FOYER spcifies .32 8.4 Dclaration de conformit36 8.5 Marquage de la conformit36 9 Dtermination de la FONCTION DE TRANSFERT DE MODULATION.36 9.1 Vue densemble.36 9.2 FONCTION DE TRANSFERT DE MODULATION spcifie36 9.3 Calcul de la FONCTION DE TRANSFERT
29、DE MODULATION38 9.4 Evaluation de conformit de la FONCTION DE TRANSFERT DE MODULATION.40 9.5 Dclaration de conformit40 10 RADIOGRAMMES MIRE TOILE40 10.1 Vue densemble.40 10.2 Appareillage dessai 42 11 LIMITE DE RSOLUTION DUNE MIRE TOILE46 11.1 Vue densemble.46 Copyright International Electrotechnica
30、l Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from IHS -,-,- 60336 IEC:2005 3 CONTENTS FOREWORD.7 1 Scope.11 2 Normative references .11 3 Terms and
31、 definitions .11 4 Determinations for the evaluation of the FOCAL SPOT characteristics11 4.1 Statement of the FOCAL SPOT characteristics11 4.2 Longitudinal axis of the X-RAY TUBE ASSEMBLY11 4.3 REFERENCE AXIS of the X-RAY TUBE ASSEMBLY.13 4.4 Direction of evaluation for the FOCAL SPOT length.13 4.5
32、Direction of evaluation for the FOCAL SPOT width13 5 FOCAL SPOT camera set-up13 5.1 Overview.13 5.2 Test equipment .13 5.3 Test arrangement17 5.4 Total uncertainty of the camera set-up 23 6 Production of RADIOGRAMS23 6.1 Overview.23 6.2 Operating conditions .23 6.3 Production of FOCAL SPOT SLIT RADI
33、OGRAMS or FOCAL SPOT PINHOLE RADIOGRAMS.25 6.4 Statement of compliance .27 7 Determination of the LINE SPREAD FUNCTION.27 7.1 Overview.27 7.2 Measuring equipment and measuring arrangement27 7.3 Measurement of the density distribution 29 7.4 Determination of the LINE SPREAD FUNCTION.29 7.5 Statement
34、of compliance .29 8 Determination of FOCAL SPOT dimensions31 8.1 Overview.31 8.2 Measurement and determination .31 8.3 Specified NOMINAL FOCAL SPOT VALUES.33 8.4 Statement of compliance .37 8.5 Marking of compliance.37 9 Determination of the MODULATION TRANSFER FUNCTION.37 9.1 Overview.37 9.2 Specif
35、ied MODULATION TRANSFER FUNCTION.37 9.3 Calculation of the MODULATION TRANSFER FUNCTION39 9.4 Evaluation of compliance of the MTF.41 9.5 Statement of compliance .41 10 FOCAL SPOT STAR RADIOGRAMS.41 10.1 Overview.41 10.2 Test equipment .43 11 STAR PATTERN RESOLUTION LIMIT47 11.1 Overview.47 Copyright
36、 International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 60336 CEI:2005 11.2 LIMITE DE RSOLUTION DUNE MIRE TOIL
37、E spcifie46 11.3 Mesure48 11.4 Dtermination de la LIMITE DE RSOLUTION DUNE MIRE TOILE48 11.5 Evaluation et dclaration de conformit.50 12 VALEUR DE DISPERSION52 12.1 Vue densemble.52 12.2 Dtermination de la VALEUR DE DISPERSION52 12.3 Evaluation et dclaration de conformit.52 13 Mthodes alternatives d
38、e mesure .54 Annexe A (informative) Alignement par rapport lAXE DE RFRENCE56 ANNEXE B (informative) Utilisation de capteurs numriques pour images radiologiques dans la dtermination des caractristiques des FOYERS60 Annexe C (informative) Contexte historique .62 Bibliographie.72 Index des termes dfini
39、s.74 Figure 1 Dimensions essentielles du diaphragme fente.14 Figure 2 Dimensions essentielles du diaphragme stnop 16 Figure 3 Position du centre du diaphragme fente ou stnop (marqu x sur la figure) par rapport lAXE DE RFRENCE.18 Figure 4 Dimensions et plans de rfrence 20 Figure 5 Alignement de la fe
40、nte du densitomtre optique.28 Figure 6 FONCTION DE DISTRIBUTION LINAIRE.30 Figure 7 Dimensions essentielles de la mire toile.42 Figure 8 Dimensions essentielles de la mire toile.44 Figure 9 Illustration des zones de modulation minimale .48 Figure A.1 AXE de RFRENCE et directions dvaluation .56 Figur
41、e A.2 Projection du FOYER LECTRONIQUE sur le PLAN DE RCEPTION DE LIMAGE.58 Figure C.1 LSFs pour un TUBE RADIOGNE type avec un petit FOYER ( 3 0,4 2 1,1 3 0,4 2 1,1 f E 1 a See 8.3. b See Figure 4. 5.4 Total uncertainty of the camera set-up The uncertainty in the FOCAL SPOT measurement contributed by
42、 the set-up of the FOCAL SPOT camera shall not exceed 5 %. 6 Production of RADIOGRAMS 6.1 Overview This clause deals with production of FOCAL SPOT SLIT RADIOGRAMS and FOCAL SPOT PINHOLE RADIOGRAMS. A method of indicating compliance with this standard of FOCAL SPOT SLIT RADIOGRAMS and FOCAL SPOT PINH
43、OLE RADIOGRAMS is included. 6.2 Operating conditions 6.2.1 FOCAL SPOT SLIT RADIOGRAMS and FOCAL SPOT PINHOLE RADIOGRAMS FOCAL SPOT SLIT RADIOGRAMS and FOCAL SPOT PINHOLE RADIOGRAMS shall be produced using a FOCAL SPOT camera according to Clause 5. Requirements for determining FOCAL SPOT dimensions f
44、rom FOCAL SPOT SLIT RADIOGRAMS are described in Clause 8; requirements for determining the MODULATION TRANSFER FUNCTION are described in Clause 9. FOCAL SPOT PINHOLE RADIOGRAMs are used only for showing the orientation, the symmetry and the distribution of radiant intensity over the FOCAL SPOT. 6.2.
45、2 X-RAY TUBE ASSEMBLY The X-RAY TUBE shall be installed in an X-RAY TUBE HOUSING of the type for which it is specified for NORMAL USE or it shall be placed under equivalent mounting and operating conditions as far as these can influence the results of the test. No ADDITIONAL FILTRATION shall be used
46、 to decrease the X-ray output flux unless it is verified that the ADDITIONAL FILTRATION has no significant effect on the LINE SPREAD FUNCTION. However, all the materials belonging to the X-RAY TUBE ASSEMBLY in NORMAL USE shall be installed. 6.2.3 LOADING FACTORS FOCAL SPOT SLIT RADIOGRAMS or FOCAL S
47、POT PINHOLE RADIOGRAMS for X-ray tube assemblies used in projection radiography or in COMPUTED TOMOGRAPHY shall be obtained with constant LOADING FACTORS in accordance with Table 2. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:14:55 MDTNo reproduction or networking permitted without license from IHS -,-,- 24 60336 CEI:2005 Pour les TUBES RADIOGNES ANODE TOURNANTE, lANODE doit tourner
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