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Abstract

Status: Published
Publication Date: 27-Aug-2026

ICS: 17.140.50 - Electroacoustics

Technical Committee: TC 87 - Ultrasonics

Current Stage: PPUB - Publication issued
Start Date: 28-Aug-2026
Completion Date: 02-Oct-2026

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IEC 62127-1:2022/ISH1:2026 - Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields - Page 1 preview

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IEC 62127-1:2022/ISH1:2026 - Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

Release Date:28-Aug-2026

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Revised: IEC 62127-1:2022 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields
Effective Date: 01-May-2026

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IEC 62127-1:2022/ISH1:2026 - Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

Release Date:28-Aug-2026

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Frequently Asked Questions

What is IEC 62127-1:2022/ISH1:2026?

IEC 62127-1:2022/ISH1:2026 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields". This standard covers: Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

What is the scope of IEC 62127-1:2022/ISH1:2026?

Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

What ICS categories does IEC 62127-1:2022/ISH1:2026 belong to?

IEC 62127-1:2022/ISH1:2026 is classified under the following ICS (International Classification for Standards) categories: 17.140.50 - Electroacoustics. The ICS classification helps identify the subject area and facilitates finding related standards.

What standards are related to IEC 62127-1:2022/ISH1:2026?

IEC 62127-1:2022/ISH1:2026 has the following relationships with other standards: It is inter standard links to IEC 62127-1:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

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IEC 62127-1:2022/ISH1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

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IEC 62127-1:2022/ISH1:2026 - I...

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 62127-1
Edition 2.0 2022-03
Ultrasonics - Hydrophones -
Part 1: Measurement and characterization of medical ultrasonic fields

INTERPRETATION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 87: Ultrasonics.
The text of this interpretation sheet is based on the following documents:
DISH Report on voting
87/941/DISH 87/946/RVDISH
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the
...

IEC

IEC 62127-3:2022(Main)

Ultrasonics - Hydrophones - Part 3: Properties of hydrophones for ultrasonic fields

IEC 62127-3:2022 specifies relevant hydrophone characteristics. This document is applicable to:
- hydrophones employing piezoelectric sensor elements, designed to measure the pulsed and continuous wave ultrasonic fields generated by ultrasonic equipment;
- hydrophones used for measurements made in water;
- hydrophones with or without an associated pre-amplifier.
IEC 62127-3:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) The upper frequency limit of 40 MHz has been removed.
b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities.
c) Procedures to determine the effective hydrophone size have been changed according to the rationale outlined in Annex B.
d) Requirements on the frequencies for which the effective hydrophone size shall be provided have been changed to achieve practicality for increased frequency bands.
e) The new Annex B and Annex C have been added.
f) Annex A has been updated to reflect the changes of the normative parts.

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62 pages
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Standard
62 pages
English and French language
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23-Feb-2026
17.140.50
TC 87

IEC

IEC 62127-3:2022/AMD1:2026(Amendment)

Amendment 1 - Ultrasonics - Hydrophones - Part 3: Properties of hydrophones for ultrasonic fields

Standard
6 pages
English language
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Standard
7 pages
French language
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Standard
13 pages
English and French language
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23-Feb-2026
17.140.50
TC 87

IEC

IEC 61847:2025(Main)

Ultrasonics - Surgical systems - Measurement and declaration of the basic output characteristics

IEC 61847:2025 specifies:
– the essential non-thermal output characteristics of ultrasonic surgical units;
– methods of measurement of these output characteristics;
– those characteristics to be declared by the manufacturers of such equipment.
This document is applicable to equipment which meets the criteria of a), b) and c) below:
a) ultrasonic surgical systems operating in the frequency range 20 kHz to 120 kHz; and
b) ultrasonic surgical systems whose use is the fragmentation, emulsification, debridement, or cutting of human tissue, whether or not those effects are delivered in conjunction with tissue removal or coagulation; and
c) ultrasonic surgical systems in which an acoustic wave is conducted by means of a specifically designed wave guide to deliver energy to the surgical site.
This document is not applicable to:
– lithotripsy equipment which uses extracorporeally induced pressure pulses, focused through liquid conducting media and the soft tissues of the body;
– surgical systems used as part of the therapeutic process (hyperthermia systems);
– surgical systems whose mechanism of action is through frictional heat generated by tissue in contact with the wave guide, e.g. clamp coagulators or clamping vibrational cutters;
– surgical systems whose mechanism of action is through focused ultrasound for either thermal degradation (high intensity focused ultrasound – HIFU or HITU) or cavitation erosion (Histotripsy) of tissue remote from the ultrasound transducer;
– surgical systems whose mechanism of action is through erosion of hard tissues in contact with the applicator tip, e.g. bone cutting or drilling.
This document does not deal with the effectiveness or safety of ultrasonic surgical systems. This document does not deal with airborne noise from the systems, which can affect operators and patients.
IEC 61847:2025 cancels and replaces the first edition published in 1998. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) The upper frequency covered by this document has been raised from 60 kHz to 120 kHz.
b) The hydrophone method of measuring ultrasound power is now normative. Because of difficulties in using the calorimetry method of measuring ultrasound power, it is no longer the primary approach.
c) It is recognised that some systems can have more than one mode of vibration under user control, and the measurement techniques and declarations have been updated to address this.
d) The high-frequency component, which relates to cavitation developed at the applicator tip and the vibration amplitude at which cavitation occurs is addressed.
e) Specific requirements for measurement at excursion levels where no cavitation is present, and extrapolation to maximum excursion level(s) are described.
f) Guidance is provided to adapt the methodology described to more complex designs and vibration patterns, excursion directions, and their output characteristics.
g) Guidance is provided with respect to measurement tank arrangements for different types of systems.
h) The list of ultrasound methods and systems not covered by this document was extended to incorporate recent developments.
i) Definitions for cavitation related terms were added.
j) Requirements for the measurement of directivity characteristics of the applicator tip were changed.
k) Annex A was modified and Figure A.1 was added.
l) New literature was added, and the references to other standards were updated.

Standard
72 pages
English and French language
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IEC

IEC 62127-2:2025(Main)

Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields

IEC 62127-2:2025 specifies:
- absolute hydrophone calibration methods;
- relative (comparative) hydrophone calibration methods.
Recommendations and references to accepted literature are made for the various relative and absolute calibration methods in the frequency range covered by this document.
This document is applicable to
- hydrophones used for measurements made in water and in the ultrasonic frequency range 50 kHz to 100 MHz;
- hydrophones employing piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment;
- hydrophones with or without a hydrophone pre-amplifier.
IEC 62127-2:2025 cancels and replaces the first edition published in 2007, Amendment 1:2013 and Amendment 2:2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the upper frequency limit of 40 MHz has been removed;
b) hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities;
c) directional response measurement and effective size determination procedures have been updated in 12.5.1 to align with recent changes in IEC 62127-3;
d) Annex F has been amended to comprise a calibration technique for high-frequency complex-valued calibration;
e) the reciprocity method description in Annex K was extended to also comprise focusing transducers.

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234 pages
English and French language
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06-Jan-2025
17.140.50
TC 87

IEC

IEC 63412-1:2024(Main)

Ultrasonics - Shear-wave elastography - Part 1: Specifications for the user interface

IEC 63412-1:2024 specifies quantities and parameters which it is essential to provide to the user of shear-wave elastography systems, many in the image headers.
This document is applicable to medical-diagnostic, ultrasonic shear-wave elastography systems, exciting (internally or externally) shear waves and tracking their propagation within biological tissue.

Standard
41 pages
English and French language
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15-Jul-2024
17.140.50
TC 87

IEC

IEC 63305:2024(Main)

Underwater acoustics - Calibration of acoustic wave vector receivers in the frequency range 5 Hz to 10 kHz

IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry.
Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field.
Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.

Standard
126 pages
English and French language
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26-Feb-2024
17.140.50
TC 87

IEC

IEC TS 63001:2024(Main)

Measurement of cavitation noise in ultrasonic baths and ultrasonic reactors

IEC TS 63001:2024 provides a technique of measurement and evaluation of ultrasound in liquids for use in cleaning devices, equipment, and ultrasonic reactors. It specifies
- the cavitation measurement at frequencies between harmonics of the operating frequency f0,
- the cavitation measurement derived by integrating broadband cavitation noise energy,
- the cavitation measurement by extraction of broadband spectral components.
This document covers the measurement and evaluation of cavitation, but not its secondary effects (cleaning results, sonochemical effects, etc.). Further details regarding the generation of cavitation noise in ultrasonic baths and ultrasonic reactors are provided in Annex A.
IEC TS 63001:2024 cancels and replaces the first edition published in 2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of a new method of measurement: the measurement of integrated broadband cavitation energy between two frequency bounds.

Technical specification
36 pages
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Technical specification
85 pages
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IEC

IEC TS 62903:2023(Main)

Ultrasonics - Measurements of electroacoustical parameters and acoustic output power of spherically curved transducers using the self-reciprocity method

IEC TS 62903:2023:
a ) establishes the free-field convergent spherical wave self-reciprocity method for ultrasonic transducer calibration,
b) establishes the measurement conditions and experimental procedure required to determine the transducer's electroacoustic parameters and acoustic output power using the self-reciprocity method,
c) establishes the criteria for checking the reciprocity of these transducers and the linear range of the focused field, and
d) provides guiding information for the assessment of the overall measurement uncertainties for radiation conductance.
This document is applicable to:
1) circular spherically curved concave focusing transducers without a centric hole working in the linear amplitude range,
2) measurements in the frequency range 0,5 MHz to 15 MHz, and
3) acoustic pressure amplitudes in the focused field within the linear amplitude range.
Characterization and sensitivity calibration of hydrophones using the reciprocity method are not addressed in this document but covered in IEC 62127-2 and IEC 60565-1.
IEC TS 62903:2023 cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Several quantities are recognized as complex-valued quantities in the definitions and in the main text.
b) Annex I was added to provide typical measurement ranges and to provide example calibration results.

Technical specification
53 pages
English language
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Technical specification
109 pages
English language
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12-Jun-2023
17.140.50
TC 87

IEC

IEC TS 62736:2023(Main)

Ultrasonics - Pulse-echo scanners - Simple methods for periodic testing to verify stability of an imaging system's elementary performance

IEC TS 62736:2023 specifies requirements and methods for periodic testing of the quality of diagnostic medical ultrasound systems using reflection-mode (pulse-echo) imaging. Image measurement and interpretation workstations are included. This document includes minimum sets of such tests intended for frequent users of medical ultrasound systems, for quality assurance professionals in their organizations, or those hired from other quality-control and/or service-provider organizations. The procedures are for a wide range of more common diagnostic ultrasound systems, currently operating from 1 MHz to 40 MHz, although available phantoms meet the specifications only from 1 MHz to 23 MHz.
The tests are defined in three levels, with the simplest and most cost-effective performed most frequently:
- Level 1 comprises five quick tests/observations to be performed daily to monthly by those normally operating the systems.
- Level 2 includes one necessary test for all systems in addition to those of Level 1, two Level 1 tests performed more rigorously, two tests that are for special situations or equipment, and one that is just optional, included because it is highly developed. Level 2 tests are performed annually by those with meaningful quality assurance training.
- Level 3 extends the two special situations tests to all systems, adds one optional test and includes a periodic review of the QA programme.
Frequent distance-measurement accuracy tests are recommended in this document only for certain classes of position encoding that are not now known to be highly stable and without bias. QA in all dimensions is recommended in this document as the first test for such systems.
The test methodology is applicable for transducers operating in the 1 MHz to 23 MHz frequency range. The types of transducers used with these scanners include
a) electronic phased arrays,
b) linear arrays,
c) convex arrays,
d) mechanical transducers,
e) two-dimensional arrays operated in a 2D imaging mode,
f) transducers operating in 3D imaging mode for a limited number of sets of reconstructed 2D images, and
g) three-dimensional scanning transducers based on a combination of the above types.
All tests on scanners considered here evaluate basic pulse-echo techniques and might detect most failures in other modes. Dedicated Doppler systems, or other systems for detection of blood motion, are excluded from this scope as specialized equipment is required to test them. Such test equipment can be specific to the intended application of the Doppler system. This document includes definition of terms and specifies methods for measuring the maximum relative depth of penetration of real-time ultrasound B MODE scanners, though this penetration measure is listed as less frequently applied.
IEC TS 62736:2023 cancels and replaces the first edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) expansion of the applicable types of transducers and the frequency range of application;
b) extension of test protocols and image assessments, including for very-low-echo spheres;
c) revision of phantom designs and their acoustic properties, consistent with the second edition of IEC TS 62791;
d) inclusion of luminance tests for system-image display consistency at scanner and remote monitors;
e) addition of special considerations for 3D-imaging transducers (Annex D) and workbook examples (Annex E).

Technical specification
66 pages
English language
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Technical specification
139 pages
English language
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12-Jan-2023
17.140.50
TC 87

IEC

IEC TS 62791:2022(Main)

Ultrasonics - Pulse-echo scanners - Low-echo sphere phantoms and method for performance testing of grey-scale medical ultrasound scanners applicable to a broad range of transducer types

IEC TS 62791:2022 defines terms and specifies methods for quantifying detailed imaging performance of real-time, ultrasound B-mode scanners. Detail is assessed by imaging phantoms containing small, low-echo spherical targets in a tissue-mimicking background and analysing sphere detectability. Specifications are given for phantom properties. In addition, procedures are described for acquiring images, conducting qualitative analysis of sphere detectability, and carrying out quantitative analysis by detecting sphere locations and computing their contrast-to-noise ratios. With appropriate choices in design, results can be applied, for example:
• to assess the relative ability of scanner configurations (scanner make and model, scan head and console settings) to delineate the boundary of a tumour or identify specific features of tumours;
• to choose scanner control settings, such as frequency or the number and location of transmit foci, which maximize spatial resolution;
• to detect defects in probes causing enhanced sidelobes and spurious echoes.
The types of transducers used with these scanners include:
a) phased arrays,
b) linear arrays,
c) convex arrays,
d) mechanical sector scanners,
e) 3-D probes operating in 2-D imaging mode, and
f) 3-D probes operating in 3-D imaging mode for a limited number of sets of reconstructed 2 D images.
The test methodology is applicable for transducers operating in the 1 MHz to 23 MHz frequency range.
IEC TS 62791:2022 cancels and replaces the first edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition.
a) It introduces necessary corrections to the analysis methods; these have been published in the literature.
b) It increases the range of contrast levels of low-echo spheres in phantoms that meet this Technical Specification. Previous specification was -20 dB, but two additional levels, -6 dB and either -30 dB or, if possible, -40 dB, are now specified.
c) It includes a wider range of uses of the methodology, including testing the effectiveness of scanner pre-sets for specific clinical tasks and detecting flaws in transducers and in beamforming.
d) It decreases the manufacturing cost by decreasing phantoms' dimensions and numbers of low-echo, backscattering spheres embedded in each phantom.

Technical specification
73 pages
English language
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IEC 62127-1:2022/ISH1:2026 - Interpretation Sheet 1 - Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

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