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    I.S. EN IEC 61828:2021

    Current The latest, up-to-date edition.

    Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  22-02-2021

    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.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Independent measurement of total acoustic output power
    6 Acoustic field measurement: equipment
    7 Measurement procedure
    Annex A (informative) Background for the transmission/ Characteristics of focusing transducers
    Annex B (informative) Rationale for focusing and nonfocusing definitions
    Annex C (informative) Methods for determining the beam axis for well-behaved beams
    Annex D (informative) Methods for determining the beam axis for beams that are not well behaved
    Annex E (informative) Uncertainties
    Annex F (informative) Transducer and hydrophone positioning systems
    Annex G (informative) Planar scanning of a hydrophone to determine acoustic output power
    Annex H (informative) Properties of water
    Bibliography

    Abstract - (Show below) - (Hide below)

    This document – provides definitions for the transmitted field characteristics of focusing and nonfocusing transducers for applications in medical ultrasound; – relates these definitions to theoretical descriptions, design, and measurement of the transmitted fields of focusing transducers; – gives measurement methods for obtaining defined field characteristics of focusing and nonfocusing transducers; – specifies beam axis alignment methods appropriate for focusing and nonfocusing transducers.

    General Product Information - (Show below) - (Hide below)

    Committee IEC/TC 87
    Document Type Standard
    Product Note The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes
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