1、NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 126212 Premire dition First edition 1994-07 Appareils lectromdicaux - Caractristiques des intensificateurs lectro-optiques dimage radiologique - Partie 2: Dtermination du facteur de conversion Medical electrical equipment - Characteristics of elect
2、ro-optical X-ray image intensifiers - Part 2: Determination of the conversion factor Numro de rfrence Reference number CEVIEC 1262-2: 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
3、certaines 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 l
4、a 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 CEP Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement (Catalog
6、ue en ligne)* Disponible la fois au site web), de la CEI* et comme priodique imprim Bulletin de la CE1 Terminologie, symboles graphiques et littraux En ce qui concerne la terminologie gnrale, le lecteur se reportera la CE1 60050: Vocabulaire Electro- technique International (VE i). Pour les symboles
7、 graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI, le lecteur consultera la CE1 60027: Symboles littraux utiliser en lectrotechnique, la CE1 6041 7: Symboles graphiques utilisables sur le matriel. Index, releve et compilation des feuilles individuelles, et la CE1 60 6
8、1 7: Symboles graphiques pour schmas. * Voir adresse 4te web), 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. F
9、or example, edition numbers 1 .O, 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
10、 by the IEC, thus ensuring that 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
11、 prepared this publication, 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 Ter
12、minology, graphical and letter 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 symbol
13、s to be used in electrical technology, 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 1262-2 Premire dition
14、First edition 1994-07 Appareils lectromdicaux - Caractristiques des intensificateurs lectro-optiques dimage radiologique - Partie 2: Dtermination du facteur de conversion Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 2: Determination of the convers
15、ion factor 0 CE1 1994 Droits de reproduction rservs - Copyright - all rights reserved Aucune partie de tte publication ne peut any IEC National Committee interested in the subject dealt with may participate in this preparatory work. Intemational, governmental and non- governmental organizations liai
16、sing with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. The formal decisions or agreements of the IEC on technical matters,
17、prepared by technical committees on which all the National Committees having interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. They have the form of recommendations for international use published in the form of standa
18、rds, technical reports or guides and they are accepted by the National Cornmittees in that sens. In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards
19、. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. International Standard IEC 1262-2 has been prepared by sub-committee 628: Diagnostic imaging equipment, of IEC technical committee 62: Electrical equipment in medic
20、al practice. It forms the first edition of IEC 1262-2 and replaces IEC 573: 1977. The text of this standard is based on the following documents: I Report on voting I DIS I Annexes A and B are for information only. In this standard, the following print types are used: - Requirements, compliance with
21、which can be tested, and definitions: in roman type. - Explanations, advice, introductions, general statements, and exceptions: in smaller type. - Test specifications: in italic type. - SMALL CAPITALS. TERMS USED THROUGHOUT THIS STANDARD WHICH HAVE BEEN DEFINED IN 3.1 AND IN ANNEX A: -6- 1262-2 O CE
22、I:1994 APPAREILS LECTROMDICAUX - CARACTRISTIQUES DES INTENSIFICATEURS LECTRO-OPTIQUES DIMAGE RADIOLOGIQUE - Partie 2: Dtermination du facteur de conversion 1 Domaine dapplication La prsente Norme internationale sapplique aux INTENSIFICATEURS ELECTRO-OPTIQUES DIMAGE RADIOLOGIQUE destins une utilisati
23、on mdicale en tant que composants dEQUIPEMENTS A RAYONNEMENT x de diagnostic. La prsente Norme internationale dcrit une mthode de dtermination du FACTEUR DE CONVERSION des INTENSIFICATEURS DIMAGE RADIOLOGIQUE. Elle est seulement applicable aux appareils pour lesquels le spectre de lumire de sortie n
24、est pas significativement diffrent de celui du luminophore P-20. 2 Rfrence normative La norme suivante contient des dispositions qui, par suite de la reference qui y est faite, constituent des dispositions valables pour la prsente Norme internationale. Au moment de la publication, Idition indique ta
25、it en vigueur. Toute norme est sujette rvision et les parties prenantes aux accords fonds sur la prsente Norme internationale sont 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 internat
26、ionales 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 7
27、88 quand des diffrences ont lieu. 3.1 .1 /I/?: Abrviation de INTENSIFICATEUR ELECTRO-OPTIQUE DIMAGE RADIOLOGIQUE. 3.1.2 PLAN DfNT&: Plan perpendiculaire a laxe de symtrie de IIIR et affleurant la partie la plus saillante de I*IIR, y compris sa gaine, dans la direction de la SOURCE DE RAYONNEMENT. 3.
28、1.3 CHAMP DfNTEf: Pour un IIR, zone du PLAN DENTREE pouvant tre utilise pour la transmission dune IMAGE RADIOLOGIQUE POTENTIELLE dans des conditions SpcifiqueS. 3.1.4 DIMENSION DU CHAMP Dfm?REf: Pour un IIR, diamtre du champ dans le PLAN DENTREE pouvant IIR ayant plus dun mode de grandissement, la D
29、IMENSION DU CHAMP DENTREE pour chacun des modes de grandissement doit correspondre un mme diamtre dIMAGE DE SORTIE de IIIR, celui qui est obtenu stre Utilis a une SED Spcifie pour la trat-ISmSSiOn dune IMAGE RADIOLOGIQUE POTENTIELLE. Pour Un avec la PIUS grande des DIMENSIONS DE CHAMPS DENTREE. 1262
30、-2 O IEC:7994 -7- MEDICAL ELECTRICAL EQUIPMENT - CHARACTERISTICS OF ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIERS - Part 2: Determination of the conversion factor 1 Scope This International Standard applies to ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIERS for medical Use, as COmpOnentS Of diagnostic X-RAY EQU
31、IPMENT. This International Standard describes a method of determining the CONVERSION FACTOR of X-RAY IMAGE INTENSIFIERS. It is applicable only to devices whose output light spectra do not significantly deviate from that of a P-20 phosphor. 2 Normative reference The following standard contains provis
32、ions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possi
33、bility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 788: 1984, Medical Radiology - Terminology 3 Terminology 3.1 Definitions For the purposes of this International Standard, the followin
34、g definitions apply together with those given in IEC 788. The definitions given below take preference over those given in IEC 788 when differences occur. 3.1.1 XII: An abbreviation for ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIER. 3.1.2 ENTANcf PLANE: The plane perpendicular to the axis of symmetry of th
35、e XRII and grazing the part of the XRII, including its housing, that protrudes most in the direction of the RADIATION SOURCE. 3.1.3 transmission of an X-RAY PATTERN under specific conditions. ENTRANCE FIELD: For an XRII, the area in the ENTRANCE PLANE that can be used for the 3.1.4 ENTRANCE FIELD SI
36、ZE: For an XRII, the diameter Of the field in the ENTRANCE PLANE that can be used at a specified SED for the transmission of an X-RAY PATTERN. For an XRII with more than one magnification mode, the ENTRANCE FIELD SIZE for each of the magnification modes shall correspond to the same diameter Of the XRII OUTPUT IMAGE OcCuring with the largest ENTRANCE FIELD SIZE.
