prEN ISO 15708-3

SLOVENSKI STANDARD
01-julij-2024
Neporušitvene preiskave - Sevalne metode za računalniško tomografijo - 3. del:
Delovanje in razlaga (ISO/DIS 15708-3:2024)
Non-destructive testing - Radiation methods for computed tomography - Part 3:
Operation and interpretation (ISO/DIS 15708-3:2024)
Zerstörungsfreie Prüfung - Durchstrahlungsverfahren für Computertomographie - Teil 3:
Durchführung und Auswertung (ISO/DIS 15708-3:2024)
Essais non destructifs - Méthodes par rayonnements pour la tomographie informatisée -
Partie 3: Fonctionnement et interprétation (ISO/DIS 15708-3:2024)
Ta slovenski standard je istoveten z: prEN ISO 15708-3
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 15708-3
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Radiation methods for computed
Voting begins on:
tomography —
2024-04-26
Part 3:
Voting terminates on:
2024-07-19
Operation and interpretation
Essais non destructifs — Méthodes par rayonnements pour la
tomographie informatisée —
Partie 3: Fonctionnement et interprétation
ICS: 19.100
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
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Reference number
ISO/DIS 15708-3:2024(en)
DRAFT
ISO/DIS 15708-3:2024(en)
International
Standard
ISO/DIS 15708-3
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Radiation methods for computed
Voting begins on:
tomography —
Part 3:
Voting terminates on:
Operation and interpretation
Essais non destructifs — Méthodes par rayonnements pour la
tomographie informatisée —
Partie 3: Fonctionnement et interprétation
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
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Published in Switzerland Reference number
ISO/DIS 15708-3:2024(en)
ii
ISO/DIS 15708-3:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Operational procedure . 1
4.1 General .1
4.2 CT system set-up .2
4.2.1 General .2
4.2.2 Geometry .2
4.2.3 X-ray source .3
4.2.4 Detector .3
4.3 Reconstruction parameters .3
4.4 Visualization .3
4.5 Analysis and interpretation of CT data .4
4.5.1 General .4
4.5.2 Feature testing/defect testing .4
4.5.3 Dimensional testing .4
5 Requirements for acceptable results . 6
5.1 Image quality parameters .6
5.1.1 Contrast .6
5.1.2 Noise .8
5.1.3 Signal to noise ratio .9
5.1.4 Contrast to noise ratio .10
5.1.5 Spatial resolution .10
5.2 Suitability of testing . 13
5.3 CT examination interpretation and acceptance criteria . 13
5.4 Records and reports . 13
5.5 Artefacts . 13
5.5.1 General . 13
5.5.2 Beam hardening artefacts .14
5.5.3 Edge artefacts . 15
5.5.4 Scattered radiation. 15
5.5.5 Instabilities .16
5.5.6 Ring artefacts .16
5.5.7 Centre of rotation error artefacts .16
5.5.8 Motion artefacts .17
5.5.9 Artefacts due to an insufficient number of projections .18
5.5.10 Cone beam artefacts . .19
Annex A (informative) Spatial resolution measurement using line pair gauges .20
Bibliography .23

iii
ISO/DIS 15708-3:2024(en)
Foreword
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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 t
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