IEC 61267:2025

IEC 61267:2025

December 2025
International standard Current

Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics

IEC 61267:2025 applies to test procedures which, for the determination of characteristics of systems or components of medical diagnostic X-ray equipment, require well-defined X-ray radiation conditions. This document deals with methods for generating X-ray radiation conditions which can be used under test conditions typically found in test laboratories or in manufacturing facilities for the determination of characteristics of medical diagnostic X-ray equipment.IEC 61267:2025 cancels and replaces the second edition published 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:a) removing former Annex C “Measurement of the practical peak voltage”;b) inserting informative “Tabulated values for the squared signal-to-noise ratio per air kerma (SNR2in)” and normative “Additional X-ray radiation conditions as used in mammography and determination of the corresponding nominal aluminium half-value layers”;c) revision of X-ray radiation conditions;d) new method for verification of X-ray radiation conditions;e) change of term definitions.

Main informations

Collections

International IEC standards

Publication date

December 2025

Number of pages

91 p.

Reference

IEC 61267:2025
Sumary
Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics

IEC 61267:2025 applies to test procedures which, for the determination of characteristics of systems or components of medical diagnostic X-ray equipment, require well-defined X-ray radiation conditions. This document deals with methods for generating X-ray radiation conditions which can be used under test conditions typically found in test laboratories or in manufacturing facilities for the determination of characteristics of medical diagnostic X-ray equipment.
IEC 61267:2025 cancels and replaces the second edition published 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) removing former Annex C “Measurement of the practical peak voltage”;
b) inserting informative “Tabulated values for the squared signal-to-noise ratio per air kerma (SNR2in)” and normative “Additional X-ray radiation conditions as used in mammography and determination of the corresponding nominal aluminium half-value layers”;
c) revision of X-ray radiation conditions;
d) new method for verification of X-ray radiation conditions;
e) change of term definitions.
Replaced standards (1)
IEC 61267:2005
November 2005
International standard Cancelled
Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics

This International Standard applies to test procedures which, for the determination of characteristics of systems or components of medical diagnostic X-ray equipment, require well-defined radiation conditions. Except for mammography, this standard does not apply to conditions where discontinuities in radiation absorption of elements are deliberately used to modify properties of the radiation beam (for example by rare earth filters). This standard deals with methods for generating radiation beams with radiation conditions which can be used under test conditions typically found in test laboratories or in manufacturing facilities for the determination of characteristics of medical diagnostic X-ray equipment. Examples of such radiation qualities are radiation beams emerging through the filtration from the X-ray source assembly. radiation conditions represent the more general case, where scattered radiation emerges from an exit surface of a patient or a phantom. This requires a well defined geometrical arrangement.

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