IEC 61262-4-1994 Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 4 Determination of the image distortion《医用电气设备 光电X射线影像增强器特性 第4部分 影像畸变的测定》.pdf

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IEC 61262-4-1994 Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 4 Determination of the image distortion《医用电气设备 光电X射线影像增强器特性 第4部分 影像畸变的测定》.pdf_第1页
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1、NORME CE1 INTERNATIONALE INTERNATIONAL STANDARD IEC 1262-4 Premire dition First edition 1994-07 Appareils lectromdicaux - Caractristiques des intensificateurs lectro-optiques dimage radiologique - Partie 4: Dtermination de la distorsion dimage Medical electrical equipment - Characteristics of electr

2、o-optical X-ray image intensifiers - Part 4: Determination of the image distortion Numro de rfrence Reference number CEI/IEC 1262-4: 1994 Numros des publications Depuis le ler janvier 1997, les publications de la CE1 sont numrotes partir de 60000. Publications consolides Les versions consolides de c

3、ertaines publications de la CE1 incorporant les amendements sont disponibles. Par exemple, 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. Validit de la

4、 prsente publication Le contenu technique des publications de la CE1 est constamment revu par la CE1 afin quil reflete ltat actuel de la technique. Des renseignements relatifs la date de re- confirmation de la publication sont disponibles dans le Catalogue de la CEI. Les renseignements relatifs des

5、questions ltude et des travaux en cours entrepris par le comit technique qui a tabli cette publication, ainsi que la liste des publications tablies, se trouvent dans les documents ci-dessous: Site web de la CEI“ Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement (Catalog

6、ue en ligne)* Disponible la fois au sur la page de titre. Numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers

7、 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incor- porating amendment 1 and the base publication incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring t

8、hat the content reflects current technology. Information relating to the date of the reconfirmation of the publication is available in the IEC catalogue. Information on the subjects under consideration and work in progress undertaken by the technical com- mittee which has prepared this publication,

9、as well as the list of publications issued, is to be found at the following IEC sources: IEC web site* Catalogue of IEC publications Published yearly with regular updates (On-line catalogue)* Available both at the IEC web site* and as a printed periodical IEC Bulletin Terminology, graphical and lett

10、er symbols For general terminology, readers are referred to I EC 60 050: International Electrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to publications IEC 60027: Letter symbols to be used in electrical t

11、echnology, IEC 60417: Graphical symbols for use on equipment. Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols for diagrams. * See web site address on title page. NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 1262-4 Premire dition First edition 1994-07 Appare

12、ils lectromdicaux - Caractristiques des intensificateurs lectro-optiques dimage radiologique - Partie 4: Dtermination de la distorsion dimage Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 4: Determination of the image distortion 0 CE1 1994 Droits d

13、e reproduction rservs - Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forma que ce soit et par aucun pro- cd. lectronique ou mcanique, y compris b photocopie et ias microfilms. sans laccord crit de lditeur. No pari of this publicati

14、on may be reproduced or utiliued in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Bureau Central de ia Commission Electrotechnique Internationale 3. rue de Varembe Genve, Suisse Commission Electrotechnique

15、internationale CODE PRIX International Electrotechnical Commission PRICE CODE L Memnwaponiian 3nempoexecna HOMHCCHR Pourprix, voir catalogue en vigueur For price, see current catalogue -2- SOMMAIRE 1262-4 O CEI:1994 Pages AVANT-PROPOS . 4 INTRODUCTION 6 Articles 1 Domaine dapplication 8 2 Rfrence no

16、rmative . 8 3 Terminologie 8 3.1 Dfinitions 8 3.2 12 Degr des prescriptions et instructions relatives la lecture . 4 Prescriptions 12 4.1 Montage dessai . 12 4.3 Rayonnement dentre . 14 4.4 DISPOSITIF DESSAI 14 4.5 Appareils de mesure 14 4.2 INTENSIFICATEUR DIMAGE RADIOLOGIQUE . Conditions de foncti

17、onnement 12 5 Dtermination de la DISTORSION DIMAGE . 14 5.1 Non utilis 14 5.2 Non utilis 14 5.3 Non utilis 16 5.4 Dtermination . 16 5.4.1 Dtermination de la DISTORSION DIFFERENTIELLE RADIALE DIMAGE 16 5.4.2 Dtermination de la DISTORSION INTEGRALE DIMAGE . 16 6 PrSentatiOn de la DISTORSION DIMAGE 16

18、7 Dclaration de conformit . 18 Figure 1 . DISPOSITIF DESSAI propos pour la dtermination de la DISTORSION DE LIMAGE . 20 Annexe A . Terminologie . Index des termes 22 1262-4 O IEC:1994 -3- CONTENTS Page FOREWORD 5 INTRODUCTION 7 Clause 1 Scope . 9 2 Normative reference . 9 3 Terminology . 9 3.1 Defin

19、itions 9 3.2 Degree of requirements and reading instructions 13 4 Requirements 13 4.1 Test Set-up . 13 4.3 Input radiation . 13 4.5 Measurement equipment . 15 4.2 4.4 TESTDEVICE 15 X-RAY IMAGE INTENSIFIER . Operating conditions 5 Determination Of the IMAGE DISTORTION 15 5.1 Not used . 15 5.2 Not use

20、d . 15 5.3 Not used . 17 5.4 Determination . 17 5.4.1 Determination Of the DIFFERENTIAL RADIAL IMAGE DISTORTION 17 5.4.2 Determination Of the INTEGRAL IMAGE DISTORTION 17 6 Presentation Of the IMAGE DISTORTION . 17 7 Statement of compliance 19 Figure 1 . Suggested TEST DEVICE for the determination O

21、f the IMAGE DISTORTION Annex A . Terminology . Index of terms . 21 23 -4- 1262-4 O CEI:1994 COMMISSION LECTROTECHNIQUE INTERNATIONALE APPAREILS LECTROMDICAUX - CARACTRISTIQUES DES INTENSIFICATEURS LECTRO-OPTIQUES DIMAGE RADIOLOGIQUE - Partie 4: Determination de la distorsion dimage AVANT-PROPOS 1) L

22、a CE1 (Commiccion Electrotechnque internationale) est une organisation mondiale de normalisation compose de lensemble des comits lectrotechniques nationaux (Comits nationaux de la CEI). La CE1 a pour objet de favoriser la coopration internationale pour toutes les questions de nonnalition dans les do

23、maines de llectricit et de llectronique. A cet effef la CEI, entre autres activis, publie des Noms internationales. Leur laboration est conlie des comits dhides, aux travaux desquels tout Comit national intress par le sujet trait peut participer. Les organisations internationales, gowemementales et

24、non gowemementales, en liaicon avec la CEI, participent galement aux travaux. La CE1 collabore troitement avec lorganisation internationale de Normalisation (ISO), selon des conditions Mes par accord entre les deux organisations. 2) Les dcicions ou accords officiels de la CE1 en qui conceme les ques

25、tions techniques, prpars par les comits dtudes O sont reprsenUs tous les Comits nationaux sintressant ces questions, expriment dans la plus grande mesure possible un accord international sur les sujets examins. 3) Ces dcisions constituentdes recommandations internationales publies sous forme de noms

26、, de rapports techniques ou de guides et agres comme telles par les Comits nationaux. 4) Dans le but dencourager lunification internationale, les Comites nationaux de la CE1 sengagent appliquer de faon transparente, dans toute la mesure possible, les Noms internationales de la CE1 dans leurs noms na

27、tionales et rgionales. Toute divergence entre la nom de la CE1 et la nom nationale correspondante doit tre indiqde en tems clairs dans cette demire. La Norme internationale CE1 1262-4 a t tablie par le sous-comit 62B: Appareils dimagerie de diagnostic, du comit dtudes 62 de la CEI: Equipements lectr

28、iques dans la pratique mdicale. Elle constitue la premire dition de la CE1 162-4 et remplace la CE1 878: 1986. Le texte de cette norme est issu des documents suivants: Rapport de vote 62B(BC)115 62B(BC)127 Le rapport de vote indiqu dans le tableau ci-dessus donne toute information sur le vote ayant

29、abouti a lapprobation de cette norme. Lannexe A est donne uniquement titre dinformation. Dans la prsente norme, les caractres dimprimerie suivants sont utiliss: - Prescriptions dont la conformit peut tre vrifie par un essai, et definitions: caractres romains. - Modalits dessais: caractres italiques.

30、 - Explications, conseils, introductions, noncs de porte gnrale et exceptions: petits caractres romains. - TERMES UTILISES DANS CETTE NORME QUI SONT DEFINIS EN 3.1 ET A LANNEXE A: PETITES CAPITALES. 1262-4 O IEC:l994 -5- INTERNATIONAL ELECTROTECHNICAL COMMISSION MEDICAL ELECTRICAL EQUIPMENT - CHARAC

31、TERISTICS OF ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIERS - Part 4: Determination of the image distortion FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The obj

32、ect of the IEC is to promote intemational cooperation on all questions concerning standardization in the electrical and electronic field. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC Nation

33、al Committee interested in the subject dealtwith may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (

34、ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters, prepared by technical Committees on which all the National Committees having interest therein are represented, express, as nearly as possib

35、le, an international conc8nsus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international un

36、ification, IEC National Committees undertake to apply IEC Intemational Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter

37、. International Standard IEC 1262-4 has been prepared by sub-committee 62B: Diagnostic imaging equipment, of IEC technical committee 62: Electrical equipment in medical practice. It forms the first edition of IEC 1262-4 and replaces IEC 858: 1986. The text of this standard is based on the following

38、documents: 62B(C0)115 62B(CO) 1 27 Full information on the voting for approval of this standard can be found in the Report on voting indicated in the above table. Annex A is for information only. In this standard, the following print types are used: - Requirements, compliance with which can be teste

39、d, and definitions: in roman type. - Explanations, advice, introductions, general statements, and exceptions: in smaller type. - Test specifications: in italic type. - TERMS USED THROUGHOUT THIS STANDARD WHICH HAVE BEEN DEFINED IN 3.1 AND IN ANNEX A: SMALL CAPITALS. -6- 1262-4 O CEI:1994 INTRODUCTIO

40、N La DISTORSION DIMAGE est une caractristique fonctionnelle qui dcrit les dviations de similitude entre RADIOLOGIQUE. II est nanmoins prsum que des distorsions angulaires, telles que la distorsion en forme dS dune ligne droite passant au CENTRE DU CHAMP DENTREE, peut tre rduite par un blindage magnt

41、ique appropri, puisque IINTENSIFICATEUR DIMAGE RADIOLOGIQUE lui-mme est, par construction, trs proche dune symtrie axiale. Une image dans le PLAN DENTREE et lIMAGE DE SORTIE dun INTENSIFICATEUR ELECTRO-OPTIQUE DIMAGE Par consquent, la prsente norme sera limite la distorsion radiale. Une lgre distors

42、ion en forme dS peut persister malgr le blindage. Son influence sur les mesures de grandissement, dcrites par la suite, est ngligeable. 1262-4 O IEC:1994 -7- i NTRO DUCT ION The IMAGE DISTORTION is a functional performance characteristic which describes deviations from a Similarity representation of

43、 an image in the ENTRANCE PLANE to the OUTPUT IMAGE Of an ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIER. It Will however be assumed that angular distortions like the S-shaped distortion Of a straight line through the CENTRE OF THE ENTRANCE FIELD can be reduced to a small size by adequate magnetic shieldin

44、g since the X-RAY IMAGE INTENSIFIER itself is by construction very nearly axially syrn rn etrical. Therefore this standard will be confined to radial distortion. A slight S-shaped distortion may persist in spite of the shielding. Its influence on the measurement of magnification, described below, is

45、 negligible. -8- 1262-4 O CE111994 APPAREILS LECTROMDICAUX - CARACTRISTIQUES DES INTENSIFICATEURS LECTRO-OPTIQUES DIMAGE RADIOLOGIQUE - Partie 4: Determination de ia distorsion dimage 1 Domaine dapplication La prsente Norme internationale sapplique aux INTENSIFICATEURS ELECTRO-OPTIQUES DIMAGE RADIOL

46、OGIQUE destins une utilisation mdicale en tant que composants dEQUIPEMENTS A RAYONNEMENT X de diagnostic. La prsente Norme internationale dcrit une mthode de dtermination de la DISTORSION DIMAGE des INTENSIFICATEURS DIMAGE RADIOLOGIQUE. 2 Rfrence nomiative La norme suivante contient des dispositions

47、 qui, par suite de la rfrence qui y est faite, constituent des dispositions valables pour la prsente Norme internationale. Au moment de la publication, Idition indique tait en vigueur. Toute norme est sujette rvision et les parties prenantes aux accords fonds sur la prsente Norme internationale sont

48、 invites rechercher la possibilit dappliquer ldition la plus rcente de la norme indique ci-aprs. Les membres de la CE1 et de IISO possdent le registre des Normes internationales en vigueur. CE1 788: 1984, Radiologie mdicale - Terminologie 3 Terminologie 3.1 Dfinitions Pour les besoins de la prsente Norme internationale, les dfinitions suivantes sappliquent en mme temps que celles qui sont donnes dans la CE1 788. Les dfinitions ci-aprs supplantent celles de la CE1 788 quand des diffrences ont lieu. 3.1.1 /I/?: Abrviation de INTENSIFICATEUR ELECTRO-OPTIQUE DIMAGE RADIOLOGIQUE. 3.1.2 PLAN oE“EE:

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