BS ISO 15708-4:2017 INTERNATIONAL ISO STANDARD 15708-4 First edition 2017-02 Non-destructive testing Radiation methods for computed tomography - Part 4: Qualification Essais non destructifs-Methodes par rayonnementspour la tomographieinformatisee- Partie4:Qualification Reference number ISO 15708-4:2017(E) iso @IS02017 BSISO15708-4:2017 IS0 15708-4:2017(E) Contents Page Foreword ,iv 1 Seope.. 2 Normative references.awawn 3 Terms and definitions 4 Qualification of the inspection. 4.1 General... 4.2 Qualification of defect testing +r 4.2.1 General 4.2.2 Qualityfeature 4.2.3 Featuredetectability/testsystem/systemparameterisation 4.2,4 Verification of suitability 4.2.5 Consistency check.. 4.2.6 Documentationerr 4.3 Qualification. of dimensional testing 4.3.1 General.... 4.3.2 Test and measurement fask 4.3.3 Dimensional testing/test system/system parameterisation. 4.3.4 Degree of accuracy .*. 4.3.5 Consistency check. 4.3.6 Documentation.. 5 Qualification of the CT system. 5.1 General 5.2 Integral overall systemtest. 5.3 Checking the system components 5.3.1 General. 5.3.2 Manipulation system... 5.3.3 Imagescaler 5.3.4 Beam axis perpendicularity. 5.3.5 Tube focal spota 5.3.6 Tube stability 5.3.7 Detector... 5.3.8 Reconstruction. 5.3.9 Visualization.. 5.4 Documentation. 6 ExampleofcTsystemresolutionevaluationmethods. 6.1 Pre-amble. 6.2 Acquisitionparameters. 6.3 Recommendationsfor creating referenceobjects. 6.4 Density resolution measurement method, 6.4.1 General.. 6.4.2 High energy reference object. 6.4.3 Lowenergyreferenceobject 6.4.4 Experimerital measurements. Bibliographyx IS0 2017-All rights reserved ii BSISO15708-4:2017 IS015708-4:2017(E) Foreword IsO (the International Organization for Standardization) is a worldwidefederation ofnational standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-gQvernmental, in liaison with Iso, also take part in the work. Iso collaborates closelywiththeInternationalElectrotechnical Commission(lEC)onallmattersof electrotechnicalstandardization. The procedures used to develop this document and those intended for its further maintenance are described intheIso/lEcDirectives,Part1.Inparticularthedifferentapprovalcriterianeededforthe 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 Wwwiso.org/directives) Attention is drawn to the possibility that some of the elements Qf this document may be the subject of patent rights. Iso shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the Iso list of patent declarations received (see www.isn.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement. For an explanation on the meaning ofisO specificterms 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 the following URL: Wwwiso.org/iso/farewordhtml This document was prepared by the European Committee for Standardization (CEN) (as EN 16016-4) and was adopted, under a special“fast-track procedure",byTechnical CommitteeISo/TC 135, Non- bodiesofIso It takes into consideration developments in computed tomography (cT) and computational power over theprecedingdecade A list of all parts in the IS0 15708 series can be found on the IS0 website. iv @ IS0 2017 -All rights reserved