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Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz (IEC 61689:2022)
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Available format(s): Hardcopy, PDF
Language(s): English
Published date: 09-05-2022
Publisher: National Standards Authority of Ireland
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.Only cited Standards give presumption of conformance to New Approach Directives/Regulations.Dates of withdrawal of national standards are available from NSAI.
FOREWORD INTRODUCTION1 Scope2 Normative references3 Terms and definitions4 Symbols5 Ultrasonic field specifications6 Conditions of measurement and test equipment used7 Type testing reference procedures and measurements 8 Routine measurement procedure9 Sampling and uncertainty determinationAnnex A (normative) Guidance for performance and safety Annex B (normative) Raster scan measurement and analysis procedures Annex C (normative) Diametrical or line scan measurement and analysis procedures Annex D (informative) Rationale concerning the beam cross-sectional area definitionAnnex E (informative) Factor used to convert the beam cross-sectional area (ABCS) at the face of th treatment head to the effective radiating area (AER)Annex F (informative) Determining acoustic power through radiation force measurementsAnnex G (informative) Validity of low-power measurements of the beam crosssectional area (ABCS)Annex H (informative) Influence of hydrophone effective diameterAnnex I (informative) Effective radiating area measurements using a radiation force balance and absorbing aperturesAnnex J (informative) Guidance on uncertainty determinationAnnex K (informative) Examples of pulse duration and pulse repetition period of amplitude modulated waves Bibliography
This document is applicable to ultrasonic equipment designed for physiotherapy containing an ultrasonic transducer generating continuous or quasi-continuous (e.g. tone burst) wave ultrasound in the frequency range 0,5 MHz to 5 MHz.
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