IEC-TS-61895-1999.pdf
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1、TECHNICAL SPECIFICATION IEC TS 61895 First edition 1999-10 Ultrasonics Pulsed Doppler diagnostic systems Test procedures to determine performance Ultrasons Systmes de diagnostic effet Doppler pulss Procdures dessai pour dterminer la performance Reference number IEC/TS 61895:1999(E) Copyright Interna
2、tional Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:55:25 MSTNo reproduction or networking permitted without license from IHS -,-,- Numbering As from 1 January 1997 all IEC publications are issued
3、 with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. 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 bas
4、e 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 that the content reflects current technology. Information relating to the date of the reconfirmation of the publication is av
5、ailable in the IEC catalogue. 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 to be found at the following IEC sources: IEC web site* Catalogue of IEC public
6、ations Published yearly with regular updates (On-line catalogue)* IEC Bulletin Available both at the IEC web site* and as a printed periodical Terminology, graphical and letter symbols For general terminology, readers are referred to IEC 60050: International Electrotechnical Vocabulary (IEV). For gr
7、aphical 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 technology, IEC 60417: Graphical symbols for use on equipment. Index, survey and compilation of the single sheets and IEC 60617:
8、Graphical symbols for diagrams. * See web site address on title page. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:55:25 MSTNo reproduction or networking permitted without
9、license from IHS -,-,- TECHNICAL SPECIFICATION IEC TS 61895 First edition 1999-10 Ultrasonics Pulsed Doppler diagnostic systems Test procedures to determine performance Ultrasons Systmes de diagnostic effet Doppler pulss Procdures dessai pour dterminer la performance PRICE CODE IEC 1999 Copyright -
10、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. International Electrotechnical Commission3, rue de Varemb Geneva, Switzerland T
11、elefax: +41 22 919 0300e-mail: inmailiec.ch IEC web site http:/www.iec.ch P For price, see current catalogue Commission Electrotechnique Internationale International Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Emp
12、loyees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:55:25 MSTNo reproduction or networking permitted without license from IHS -,-,- 2 TS 61895 IEC:1999(E) CONTENTS Page FOREWORD 4 INTRODUCTION 6 Clause 1Scope 7 2Normative references. 7 3Definitions 7 4Symbols. 12 5Overall tests of com
13、plete systems 12 5.1General considerations . 12 5.1.1Types of pulsed Doppler ultrasound systems 12 5.1.2Worst-case conditions. 13 5.1.3Doppler beam axes . 14 5.1.4Probe/target distance variation and measurement 14 5.2Initial conditions 15 5.2.1Power supply. 15 5.2.2Target movement direction 15 5.2.3
14、Propagation medium . 15 5.2.4Penetration depth 16 5.2.5Working depth. 16 5.2.6Focusing . 16 5.2.7Working Doppler angle 16 5.2.8Wall-thump filter cut-off frequency. 17 5.2.9Transmitter output power. 17 5.2.10 Working pulse repetition frequency (PRF) 17 5.2.11 Doppler (receiver) gain 17 5.2.12 Test fr
15、equency 17 5.2.13 Working sample volume length 17 5.2.14 Doppler signal power measurement. 17 5.3Zero signal noise level 17 5.4Doppler frequency response 18 5.4.1Frequency response range 18 5.4.2Deviation from flat response 18 5.4.3Large signal performance 18 5.5Spatial response . 19 5.5.1Sample vol
16、ume response. 19 5.6Sample volume position registration error 20 5.7Beam position and orientation . 21 5.8Intrinsic broadening. 22 5.9Dead zone 22 5.10Acoustic working frequency. 22 5.11Flow direction separation. 22 5.12Velocity estimation accuracy . 22 Copyright International Electrotechnical Commi
17、ssion Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:55:25 MSTNo reproduction or networking permitted without license from IHS -,-,- TS 61895 IEC:1999(E) 3 5.13Volume flow estimation accuracy. 22 5.14Maximum, mean, mode and me
18、dian frequency estimation accuracy. 23 5.15Velocity waveform indices estimation accuracy 25 6Doppler test objects. 26 6.1Test objects. 26 6.2Electronic test object . 26 Annex A (normative) Description of pulsed Doppler ultrasound systems 28 A.1 Single-channel system . 28 A.2 Multi-channel system 29
19、A.3 Aliasing 29 A.4 Duplex and triplex scanners . 29 Bibliography . 32 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:55:25 MSTNo reproduction or networking permitted without
20、 license from IHS -,-,- 4 TS 61895 IEC:1999(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION ULTRASONICS PULSED DOPPLER DIAGNOSTIC SYSTEMS TEST PROCEDURES TO DETERMINE PERFORMANCE FOREWORD 1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising al
21、l national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Stand
22、ards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC c
23、ollaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of op
24、inion on the relevant subjects since each technical committee has representation from all interested National Committees. 3)The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides
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