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CENELEC - EN IEC 61828

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

active, Most Current
Organization: CENELEC
Publication Date: 1 February 2021
Status: active
Page Count: 118
ICS Code (Electroacoustics): 17.140.50
scope:

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.

This document relates to focusing ultrasonic transducers operating in the frequency range appropriate to medical ultrasound (0,5 MHz to 40 MHz) for both therapeutic and diagnostic applications. It shows how the characteristics of the transmitted field of transducers can be described from the point of view of design, as well as measured by someone with no prior knowledge of the construction details of a particular device. The transmitted ultrasound field for a specified excitation is measured by a hydrophone in either a standard test medium (for example, water) or in a given medium. This document applies only to media where the field behaviour is essentially like that in a fluid (i.e. where the influence of shear waves and elastic anisotropy is small), including soft tissues and tissue-mimicking gels. Any aspects of the field that affect their theoretical description or are important in design are also included. These definitions would have use in scientific communications, system design and description of the performance and safety of systems using these devices.

This document incorporates definitions from other related standards where possible, and supplies more specific terminology, both for defining focusing characteristics and for providing a basis for measurement of these characteristics.

Document History

EN IEC 61828
February 1, 2021
Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields
This document – provides definitions for the transmitted field characteristics of focusing and nonfocusing transducers for applications in medical ultrasound; – relates these definitions to...
October 1, 2001
Ultrasonics - Focusing Transducers - Definitions and Measurement Methods for the Transmitted Fields
A description is not available for this item.

References

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