FprEN ISO 15708-2:2024

SLOVENSKI STANDARD
oSIST prEN ISO 15708-2:2024
01-julij-2024
Neporušitvene preiskave - Sevalne metode za računalniško tomografijo - 2. del:
Načela, oprema in vzorci (ISO/DIS 15708-2:2024)
Non-destructive testing - Radiation methods for computed tomography - Part 2:
Principles, equipment and samples (ISO/DIS 15708-2:2024)
Zerstörungsfreie Prüfung - Durchstrahlungsverfahren für Computertomographie - Teil 2:
Grundlagen, Geräte und Proben (ISO/DIS 15708-2:2024)
Essais non destructifs - Méthodes par rayonnements pour la tomographie informatisée -
Partie 2: Principes, équipements et échantillons (ISO/DIS 15708-2:2024)
Ta slovenski standard je istoveten z: prEN ISO 15708-2
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
oSIST prEN ISO 15708-2:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 15708-2:2024
oSIST prEN ISO 15708-2:2024
DRAFT
International
Standard
ISO/DIS 15708-2
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Radiation methods for computed
Voting begins on:
tomography —
2024-04-08
Part 2:
Voting terminates on:
2024-07-01
Principles, equipment and samples
Essais non destructifs — Méthodes par rayonnements pour la
tomographie informatisée —
Partie 2: Principes, équipements et échantillons
ICS: 19.100
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 15708-2:2024(en)
oSIST prEN ISO 15708-2:2024
DRAFT
ISO/DIS 15708-2:2024(en)
International
Standard
ISO/DIS 15708-2
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Radiation methods for computed
Voting begins on:
tomography —
Part 2:
Voting terminates on:
Principles, equipment and samples
Essais non destructifs — Méthodes par rayonnements pour la
tomographie informatisée —
Partie 2: Principes, équipements et échantillons
ICS: 19.100
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
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TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION.
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Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 15708-2:2024(en)
ii
oSIST prEN ISO 15708-2:2024
ISO/DIS 15708-2:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 1
4.1 Basic principles .1
4.2 Advantages of CT .2
4.3 Limitations of CT .2
4.4 Main CT process steps.3
4.4.1 Acquisition .3
4.4.2 Reconstruction . . .3
4.4.3 Visualization and analysis .4
4.5 Artefacts in CT images.4
5 Equipment and apparatus . 4
5.1 General .4
5.2 Radiation sources . .5
5.3 Detectors.6
5.4 Manipulation .6
5.5 Acquisition, reconstruction, visualization and storage system .6
6 CT system stability . 7
6.1 General .7
6.2 X-Ray Stability .7
6.3 Manipulator stability .7
7 Geometric alignment . 8
8 Sample considerations. 8
8.1 Size and shape of sample .8
8.2 Materials (including table voltage/thickness of penetration) .8
Annex A (informative) CT system components . 10
Bibliography .16

iii
oSIST prEN ISO 15708-2:2024
ISO/DIS 15708-2:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by European Technical Committee CEN/TC 138 Non-destructive testing and
was adopted under a special “fast-track procedure”, by Technical Committee ISO/TC 135, Non-destructive
testing, Subcommittee SC 5, Radiographic testing.
This third edition cancels and replaces the second edition (ISO 15708-2:2017), which has been technically
revised.
The main changes are as follows:
— Correction of the vacuum level for activating the turbo pump in A.1.1;
— Addition of photon counting as an example under semiconductors in A.2.3;
— editorial changes.
A list of all parts in the ISO 15708 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
oSIST prEN ISO 15708-2:2024
DRAFT International Standard ISO/DIS 15708-2:2024(en)
Non-destructive testing — Radiation methods for computed
tomography —
Part 2:
Principles, equipment and samples
1 Scope
This document specifies the general principles of X-ray computed tomography (CT), the equipment used and
basic considerations of sample, materials and geometry.
It is applicable to industrial imaging (i.e. non-medical applications) and gives a consistent set of CT
performance parameter definitions, including how those performance parameters relate to CT system
specifications.
This document deals with computed axial tomography and excludes other types of tomography such as
translational tomography and tomosynthesis.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 15708-1:2024, Non-destructive testing — Radiation methods for computed tomography — Part 1:
Terminology
ISO 15708-3:2024, Non-destructive testing — Radiat
...