IEC 60806:2022

IEC 60806 ®
Edition 2.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Determination of the maximum symmetrical radiation field of X-ray tube
assemblies and X-ray source assemblies for medical diagnosis

Détermination du champ de rayonnement maximal symétrique des gaines
équipées et des ensembles radiogènes utilisés en diagnostic médical

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IEC 60806 ®
Edition 2.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Determination of the maximum symmetrical radiation field of X-ray tube

assemblies and X-ray source assemblies for medical diagnosis

Détermination du champ de rayonnement maximal symétrique des gaines

équipées et des ensembles radiogènes utilisés en diagnostic médical

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 11.040.50 ISBN 978-2-8322-6095-1

– 2 – IEC 60806:2022 © IEC 2022
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Maximum symmetrical RADIATION FIELD . 6
4.1 Orientation of the maximum symmetrical RADIATION FIELD . 6
4.2 Determination of the maximum symmetrical RADIATION FIELD . 7
5 Measurement of the distribution of AIR KERMA RATE . 7
5.1 Detector . 7
5.2 Measuring arrangement . 8
5.3 Measuring conditions . 9
6 Statement of compliance . 9
Annex A (informative) Background . 10
A.1 Overview. 10
A.2 Second edition . 10
Index of defined terms . 11

Figure 1 – Orientation of the maximum symmetrical RADIATION FIELD . 6
Figure 2 – Typical distribution of the relative AIR KERMA RATE along the major axis X of
a maximum symmetrical RADIATION FIELD . 7
Figure 3 – Measuring arrangement . 8

Table 1 – RADIATION QUALITY . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DETERMINATION OF THE MAXIMUM SYMMETRICAL
RADIATION FIELD OF X-RAY TUBE ASSEMBLIES AND X-RAY
SOURCE ASSEMBLIES FOR MEDICAL DIAGNOSIS

FOREWORD
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IEC 60806 has been prepared by subcommittee 62B: Diagnostic imaging equipment, of IEC
technical committee 62: Electrical equipment in medical practice. It is an International Standard.
This second edition cancels and replaces the first edition published in 1984. This edition
constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
a) addition of solid state detectors as they have become more common since the first edition
of 1984.
– 4 – IEC 60806:2022 © IEC 2022
The text of this document is based on the following documents:
Draft Report on voting
62B/1298/FDIS 62B/1305/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
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– requirements and definitions: roman type;
– test specifications: italic type;
informative material appearing outside of tables, such as notes, examples and references: in smaller type.
–
Normative text of tables is also in a smaller type;
– TERMS DEFINED IN CLAUSE 3: SMALL CAPITALS.
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specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
DETERMINATION OF THE MAXIMUM SYMMETRICAL
RADIATION FIELD OF X-RAY TUBE ASSEMBLIES AND X-RAY
SOURCE ASSEMBLIES FOR MEDICAL DIAGNOSIS

1 Scope
This document is applicable to X-RAY SOURCE ASSEMBLIES and X-RAY TUBE ASSEMBLIES.
NOTE 1 If, for certain MEDICAL ELECTRICAL SYSTEMS, special radiation fields are required such that the scope of
IEC 60806 does not apply (e. g., using CT collimators with bow-tie filters), the appropriate system particular standard
applies.
This document specifies a method for the determination of the greatest geometrically
symmetrical RADIATION FIELD at a specified distance from the FOCAL SPOT for which the
percentage AIR K
...