1、Designation: E2738 131Standard Practice forDigital Imaging and Communication NondestructiveEvaluation (DICONDE) for Computed Radiography (CR) TestMethods1This standard is issued under the fixed designation E2738; the number immediately following the designation indicates the year oforiginal adoption
2、 or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTETable 4 was corrected editorially in January 2014.1. Scope*1.1 This practice facili
3、tates the interoperability of computedradiography (CR) imaging and data acquisition equipment byspecifying image data transfer and archival storage methods incommonly accepted terms. This practice is intended to be usedin conjunction with Practice E2339 on Digital Imaging andCommunication in Nondest
4、ructive Evaluation (DICONDE).Practice E2339 defines an industrial adaptation of the NEMAStandards Publication titled Digital Imaging and Communica-tions in Medicine (DICOM, see http:/medical.nema.org), aninternational standard for image data acquisition, review,storage and archival storage. The goal
5、 of Practice E2339,commonly referred to as DICONDE, is to provide a standardthat facilitates the display and analysis of NDE results on anysystem conforming to the DICONDE standard. Toward thatend, Practice E2339 provides a data dictionary and a set ofinformation modules that are applicable to all N
6、DE modalities.This practice supplements Practice E2339 by providing infor-mation object definitions, information modules and a datadictionary that are specific to computed radiography testmethods.1.2 This practice has been developed to overcome the issuesthat arise when analyzing or archiving data f
7、rom CR testequipment using proprietary data transfer and storage methods.As digital technologies evolve, data must remain decipherablethrough the use of open, industry-wide methods for datatransfer and archival storage. This practice defines a methodwhere all standard CR technique parameters and tes
8、t results arecommunicated and stored in a standard manner regardless ofchanges in digital technology.1.3 This practice does not specify:1.3.1 A testing or validation procedure to assess an imple-mentations conformance to the standard.1.3.2 The implementation details of any features of thestandard on
9、 a device claiming conformance.1.3.3 The overall set of features and functions to be ex-pected from a system implemented by integrating a group ofdevices each claiming DICONDE conformance.1.4 Although this practice contains no values that requireunits, it does describe methods to store and communica
10、te datathat do require units to be properly interpreted. The SI unitsrequired by this practice are to be regarded as standard. Noother units of measurement are included in this practice.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is th
11、eresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E1316 Terminology for Nondestructive ExaminationsE2339 Practice for Digital Imaging an
12、d Communication inNondestructive Evaluation (DICONDE)2.2 Other Documentation:National Electrical Manufacturers Association Standard forDigital Imaging and Communication in Medicine(DICOM), 2011.3. Terminology3.1 Definitions:3.1.1 Nondestructive evaluation terms used in this practicecan be found in T
13、erminology E1316.3.1.2 DICONDE terms used in this practice are defined inPractice E2339.1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.11 on DigitalImaging and Communication in Nondestructive Evaluation (
14、DICONDE).Current edition approved Dec. 15, 2013. Published January 2014. Originallyapproved in 2010. Last previous edition approved in 2011 as E2738 - 11. DOI:10.1520/E2738-13E012For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
15、For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. S
16、ummary of Practice4.1 A fundamental principle of DICONDE is the use ofstandard definitions and attribute formats for data communica-tion and storage. This means all systems that are DICONDEcompliant use a common data dictionary and common com-munication protocols. To further standardization, the ele
17、mentsin the data dictionary are organized into common groupsreferred to as information modules. The data dictionary andinformation modules common to all NDE modalities aredefined in Practice E2339.4.2 The data dictionary and information modules specifiedin Practice E2339 do not cover the information
18、 storagerequirements for each individual modality (CT, DR, CR, UT,etc.). Additions to the data dictionary and information modulesare required to support the individual modalities. This practicecontains the additions to the DICONDE data dictionary andinformation modules necessary for CR inspection.4.
19、3 The highest organizational level in the DICONDEinformation model is the information object definition (IOD).An information object definition is a collection of the infor-mation modules necessary to represent a set of test results froma specific modality. This practice contains information objectde
20、finitions for CR inspection.5. Significance and Use5.1 Personnel that are responsible for the creation, transfer,and storage of computed radiography NDE data will use thispractice. This practice will define a set of information modulesthat along with the Practice E2339 and the DICOM standardwill pro
21、vide a standard means to organize CR inspection data.The CR inspection data may be displayed and analyzed on anydevice that conforms to the standard. Personnel wishing toview any CR inspection data stored in accordance with PracticeE2339 may use this practice to help them decode and displaythe data
22、contained in the DICONDE compliant inspectionrecord.6. Information Object Definitions6.1 NDE Computed Radiography Image IOD Description:6.1.1 The NDE Computed Radiography (CR) Image Infor-mation Object Definition specifies an image that has beencreated by a computed radiography imaging device for ND
23、Epurposes. The IOD definition will follow that for CR Imagesfound in Part 3, Section A.2 of the DICOM standard except asnoted in Table 1. Table 1 is not stand-alone and must be usedin conjunction with Part 3, SectionA.2 of the DICOM standardto have a complete definition of the NDE CR informationobje
24、ct.6.1.2 This IOD will use the Service-Object Pair (SOP) classfor the CR IOD as defined in Part 4, Section B.5 of the DICOMstandard.7. Information Modules7.1 NDE CR Series Module:7.1.1 Table 2 specifies the attributes that describe NDEComputed Radiography images.7.2 NDE Source Radiography Module:7.2
25、.1 Table 3 specifies the attributes that describe NDESource Radiography Module.7.3 NDE CR Image Module:7.3.1 Table 4 specifies the attributes that describe NDE CRImage Module.8. Keywords8.1 Computed Radiography; CR; database; DICOM; DI-CONDE; digital data storage; digital data transmission; fileform
26、atTABLE 1 NDE CR Image Information Object DefinitionDICOM Module DICONDE Module Reference UsagePatient Component E2339, Section 7 MClinical Trial Subject Not ApplicableGeneral Study Component Study E2339, Section 7 MPatient Study Not ApplicableClinical Trial Study Not ApplicableGeneral Series Compon
27、ent Series E2339, Section 7 MCR Series NDE CR Series Section 7.1 MClinical Trial Series Not Applicable UGeneral Equipment NDE Equipment E2339, Section 7 MContrast/bolous Not Applicable UCR image NDE CR image Section 7.3 MNDE Indication E2339, Section 7 UNDE Geometry E2339, Section 7 UNDE Source Radi
28、ography Section 7.2 UE2738 1312TABLE 2 NDE CR Series Module AttributesAttribute Name Tag VR VM Type DescriptionPart Examined (0018,0015) CS 1 2 Text description of the part examinedView Position (0018,5101) CS 1 2 Radiographic view. Defined Terms:FA = Forward/AftAF = Aft/ForwardLL = Left LateralRL =
29、 Right LateralRLD = Right Lateral DecubitusLLD = Left Lateral DecubitusFilter Type (0018,1160) SH 1 3 Label for the type of filter inserted into the x-raybeamCollimator/grid Name (0018,1180) SH 1 3 Label describing any grid inserted.Focal Spot (0018,1190) DS 1-n 3 Size of the focal spot in mm. For d
30、evices withvariable focal spot or multiple focal spots, smalldimension followed by large dimension.Plate Type (0018,1260) SH 1 3 Label of the type of storage phosphor platesused in this seriesPhosphor Type (0018,1261) LO 1 3 Label of type of phosphor on the platesTABLE 3 NDE Source Radiography Modul
31、e AttributesAttribute Name Tag VR VM Type DescriptionSource Type (300A,0214) CS 1 1 Type of Source: Defined Terms:POINTLINECYLINDERSPHERESource Manufacturer (300A,0216) LO 1 3 Manufacturer of SourceActive Source Diameter (300A,0218) DS 1 3 Diameter of active Source (mm)Active Source Length (300A,022
32、0) DS 1 3 Length of active Source (mm)Material ID (300A,00E1) DS 1 3 User-supplied identifier for encapsulation material ofactive SourceSource EncapsulationNominal Thickness(300A,0222) DS 1 3 Nominal thickness of wall of encapsulation (mm)Source EncapsulationNominal Transmission(300A,0224) DS 1 3 No
33、minal transmission through wall of encapsulation(between 0 and 1)Source Isotope Name (300A,0226) LO 1 1 Name of IsotopeSource Isotope Half-Life (300A,0228) DS 1 1 Half-life of Isotope (days)Source Strength Units (300A,0229) CS 1 1C Measurement of Source StrengthRequired if the source is not a gamma-
34、emitting (photon)source. May be present otherwise.Enumerate values:AIR Kerma Rate = Air Kerma Rate if Source is Gamma-emitting IsotopeReference Air Kerma Rate (300A,022A) 1 1 Air Kerma Rate in air of Isotope specified at SourceStrenth Reference Date (300A,022C) and SourceStrength Reference Time (300
35、A,022E) (in Gy h-1at 1m). Values shall be zero for non-gamma sources.Source Strength (300A,022B) 1 1C Source Strength of Isotope at Source Strength ReferenceDate (300A,022C) and Source Strength Reference Time(300A,022E), in units specified in Source Strength Units(300A,0229).Required if the source i
36、s not a gamma-emitting (photon)source.Source Strength ReferenceDate(300A,022C) DT 1 1 Reference date for Reference Air Kerma Rate(300A,022A) or Source Strength (300A,022B) of Isotope.Source Strength ReferenceTime(300A,022E) TM 1 1 Reference time for Reference Air Kerma Rate(300A,022A) or Source Stre
37、ngth (300A,022B) of Isotope.E2738 1313TABLE 4 NDE CR Image Module AttributesAttribute Name Tag VR VM Type DescriptionPhotometric Interpretation (0028,0004) CS 1 1 Specifies the intended interpretation of the pixel data.Shall have one of the following enumerated values:MONOCHROME 1MONOCHROME 2KVP (00
38、18,0060) DS 1 3 Peak kilo voltage output of the x-ray generator used.Plate ID (0018,1004) LO 1 3 The ID or serial number of the sensing plate upon whichthe image was acquired.Distance Source to Detector (0018,1110) DS 1 3 Distance in mm from source to detector centerDistance Source to Part (0018,111
39、1) DS 1 3 Distance in mm from the source to isocenter (center offield of view).Exposure Time (0018,1150) IS 1 3 Time of X-ray exposure in msecX-ray Tube Current (0018,1151) IS 1 3 X-ray Tube Current in mAExposure (0018,1152) IS 1 3 The exposure expressed in mAs, for example calculatedfrom Exposure T
40、ime and X-ray Tube Current.Exposure in As (0018,1153) IS 1 3 The exposure expressed in As, for example calculatedfrom Exposure Time and X-ray Tube Current.Image Pixel Spacing (0018,1164) DS 2 3 Physical distance measured at the front plane of theImage Receptor housing between the center of eachpixel
41、. Specified by a numeric pair row spacing value(delimiter) column spacing value in mm.In the case of CR, the front plane is defined to be theexternal surface of the CR plate closest to the part andradiation source.Generator Power (0018,1170) IS 1 3 Power in kW to the X-ray generator.Acquisition Devi
42、ceProcessing Description(0018,1400) LO 1 3 Describes device-specific processing associated with theimage.Acquisition DeviceProcessing Code(0018,1401) LO 1 3 Code representing the device-specific processingassociated with the image.Cassette Orientation (0018,1402) CS 1 3 Orientation of the cassette u
43、sed to properly position theimage for display. Enumerated Values:LANDSCAPEPORTRAITCassette Size (0018,1403) CS 1 3 Size of the cassette. Defined terms18cm24cm8in10in24cm30cm10in12in30cm35cm30cm40cm11in14in35cm35cm14in14in35cm43cm14in17inExposures on Plate (0018,1404) US 1 3 Total number of X-ray exp
44、osures that have been madeon the plate identified in Plate ID. (0018,1004)Relative X-ray Exposure (0018,1405) IS 1 3 Relative X-ray exposure on the plate. Meaning of valuesis implementation specific.Sensitivity (0018,6000) 1 3 Read out sensitivity.X-ray Tube Current in A (0018,8151) DS 1 3 X-ray Tub
45、e Current in A.Image Quality Indicator Type (0014,40A0) LO 1-n 3 Description of the type of Image Quality Indicator used.Image Quality IndicatorMaterial(0014,40A1) LO 1-n 3 Description of the material used to manufacture theImage Quality Indicator.Image Quality Indicator Size (0014,40A2) LO 1-n 3 De
46、signation for the size of the Image Quality Indicatorused. A typical size designation is 2-2T where the firstnumber indicates that the IQI thickness is two percent ofthe test material thickness and second number definesthe hole diameter as twice the IQI thickness.E2738 1314SUMMARY OF CHANGESCommitte
47、e E07 has identified the location of selected changes to this standard since the last issue (E2738 - 11)that may impact the use of this standard. (December 15, 2013)(1) Added Section 7.2 to describe the NDE Source Radiogra-phy module.(2) Added 7.3 to add NDE-specific attributes to the CR Imagemodule
48、. The attributes added were for X-ray Current in A andIQI description.(3) Updated Table 1 to reflect the addition of Section 7.2 and7.3.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this stan
49、dard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meet
