ISO INTERNATIONAL STANDARD 16371-1 First edition 2011-10-01 Non-destructive testing Industrial computed radiography with storage phosphor imaging plates - Part 1: Classification of systems Essais nondestructifsRadiographie industriellenumeriséeavecdes plaques-images auphosphore- Partie1:Classificationdessystemes Reference number ISO 16371-1:2011(E) @ISO 2011 ISO 16371-1:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IsO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2011 All rights reserved ISO 16371-1:2011(E) Contents Page Foreword 1 Scope .1 2 Normativereferences.. 3 Terms and definitions. 4 Personnel qualification... 3 5 CR quality indicators.. 5.1 Descriptionof CRqualityindicatorsforuserandmanufacturertests 5.1.1 5.1.2 Contrast sensitivity quality indicator.... 5.1.3 Duplex wire quality indicator .. 5.1.4 Converging line pair quality indicator... 5.1.5 Linearity quality indicators.. 5.1.6 T-target... 5.1.7 Scanner slipping quality indicator... 5.1.8 Shading quality indicator... 5.1.9 Central beam alignment quality indicator (BAM-snail). 5.2 Applicationproceduresfor CRqualityindicators .. 5.2.1 General.. 5.2.2 Exposure of cR quality indicators (user test)... 5.2.3 Initial assessmentof cRquality indicators (usertest) 5.2.4 Periodical control (user test)... 5.3 Imaging plate fading....... 6 Procedure for quantitative measurement of image quality parameters 6.1 Measurement of the normalized Signal-to-Noise Ratio.. .5 6.1.1 Step Exposure Method (manufacturer test).... 6.1.2 Step Wedge Method (manufacturertestand enhanced usertest). 6.1.3 Contrast sensitivity measurement (manufacturer and user test) .9 6.2 Measurement of minimum read-out intensity of computed radiographs (manufacturer procedure)... .9 6.3 Determination of un-sharpness.. 10 6.3.1 10 6.3.2 MTF-method (manufacturer test).... .10 6.3.3 Duplex wire method (manufacturerand usertest). 11 6.3.4 Converging line pair quality indicators (manufacturerand user test). 12 6.4 Other tests.... 12 6.4.1 Geometricdistortions (manufacturerandusertest) 12 6.4.2 Laserbeamfunction (manufacturerand usertest) 12 6.4.3 Blooming orflare (manufacturerand usertest) 13 6.4.4 Scanner slipping (manufacturer and usertest) 13 6.4.5 Shading (manufacturer and user test).. 13 6.4.6 Erasure (manufacturer and user test)... 13 6.4.7 IP artefacts (user test).......... 7 CRSystemClassificationand InterpretationofResults 14 7.1 14 7.2 Range of CR System Classification... 14 7.3 Determination of Iso Speed (manufacturer procedure). 15 Annex A (informative) Example for Iipx measurement... 16 @ ISO 2011 All rights reserved ili ISO 16371-1:2011(E) AnnexB (informative)Exampleof cR test phantom.. B.1 Locationandalignmentof CRQualityIndicators inaCRPhantom .20 B.2 Shading test ... .21 B.2.1 B.2.2 Shading Quality Indicator. ..21 B.2.3 Procedure ... .21 B.3 Central beam alignment.... .21 B.3.1 CRAlignment Quality Indicator (BAM-snail) B.3.2 Procedure.... ..22 B.4 Contrast sensitivityquality indicator... .22 Annex C (informative) Guidance for application of various tests and test methods .23 C.1 Manufacturertests........ C.2 Tests after repair, upgrade or the use of an improved IP.. C.3 User tests for longterm stability .... ..23 Bibliography.. ...25 iv @ ISO 2011 All rights reserved ISO16371-1:2011(E) 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 non-governmental, in liaison with IsO, also take part in the