Designation:E2002−2015StandardPracticeforDeterminingTotalImageUnsharpnessandBasicSpatialResolutioninRadiographyandRadioscopy1ThisstandardisissuedunderthefixeddesignationE2002;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticecoversthedesignandbasicuseofagaugeusedtodeterminethetotalimageunsharpnessandthebasicspatialresolutionoffilmradiographsorofdigitalimagestakenwithCRimagingplates,digitaldetectorarrays,orradioscopicsystems.1.2Thispracticeisapplicabletoradiographicandradio-scopicimagingsystemsutilizingX-rayandgammarayradia-tionsources.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thegaugedescribedcanbeusedeffectivelywithtubevoltagesupto600kV.Whenusingsourcevoltagesinthemegavoltrangetheresultsmaynotbecompletelysatisfactory.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E747PracticeforDesign,ManufactureandMaterialGroup-ingClassificationofWireImageQualityIndicators(IQI)UsedforRadiologyE1025PracticeforDesign,Manufacture,andMaterialGroupingClassificationofHole-TypeImageQualityIn-dicators(IQI)UsedforRadiologyE1316TerminologyforNondestructiveExaminationsE1815TestMethodforClassificationofFilmSystemsforIndustrialRadiography2.2ISOStandards3ISO19232–1Non-destructiveTesting—ImageQualityofRadiographs—Part1:ImageQualityIndicators(WireType)—DeterminationofImageQualityValueISO19232–2Non-destructiveTesting—ImageQualityofRadiographs—Part2:ImageQualityIndicators(Step/HoleType)—DeterminationofImageQualityValueISO19232–5Non-destructiveTesting—ImageQualityofRa...
