ASTM E2767-10

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Designation: E2767 – 10
Standard Practice for
Digital Imaging and Communication in Nondestructive
Evaluation (DICONDE) for X-ray Computed Tomography (CT)
Test Methods
This standard is issued under the fixed designation E2767; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.3.2 The implementation details of any features of the
standard on a device claiming conformance.
1.1 This practice facilitates the interoperability of X-ray
1.3.3 The overall set of features and functions to be ex-
computed tomography (CT) imaging equipment by specifying
pected from a system implemented by integrating a group of
image data transfer and archival storage methods in commonly
devices each claiming DICONDE conformance.
accepted terms. This document is intended to be used in
1.4 Although this practice contains no values that require
conjunction with Practice E2339 on Digital Imaging and
units, it does describe methods to store and communicate data
Communication in Nondestructive Evaluation (DICONDE).
that do require units to be properly interpreted.
Practice E2339 defines an industrial adaptation of the NEMA
1.5 The values stated in SI units are to be regarded as
Standards Publication titled Digital Imaging and Communica-
standard. No other units of measurement are included in this
tions in Medicine (DICOM, see http://medical.nema.org), an
standard.
international standard for image data acquisition, review,
1.6 This standard does not purport to address all of the
storage and archival storage. The goal of Practice E2339,
safety concerns, if any, associated with its use. It is the
commonly referred to as DICONDE, is to provide a standard
responsibility of the user of this standard to establish appro-
that facilitates the display and analysis of NDE test results on
priate safety and health practices and determine the applica-
any system conforming to the DICONDE standard. Toward
bility of regulatory limitations prior to use.
that end, Practice E2339 provides a data dictionary and a set of
information modules that are applicable to all NDE modalities.
2. Referenced Documents
This practice supplements Practice E2339 by providing infor-
2.1 ASTM Standards:
mation object definitions, information modules and a data
E1316 Terminology for Nondestructive Examinations
dictionary that are specific to X-ray CT test methods.
E1441 Guide for Computed Tomography (CT) Imaging
1.2 This practice has been developed to overcome the issues
E1475 Guide for Data Fields for Computerized Transfer of
that arise when analyzing or archiving data from tomographic
Digital Radiological Examination Data
test equipment using proprietary data transfer and storage
E1570 Practice for Computed Tomographic (CT) Examina-
methods. As digital technologies evolve, data must remain
tion
decipherable through the use of open, industry-wide methods
E2339 Practice for Digital Imaging and Communication in
for data transfer and archival storage. This practice defines a
Nondestructive Evaluation (DICONDE)
method where all the X-ray CT technique parameters and test
2.2 Other Standard:
results are communicated and stored in a standard manner
DICOM National Electrical Manufacturers Association
regardless of changes in digital technology.
Standard for Digital Imaging and Communication in
1.3 This practice does not specify:
Medicine (DICOM), 2008.
1.3.1 A testing or validation procedure to assess an imple-
mentation’s conformance to the standard.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
structive Testing and is the direct responsibility of Subcommittee E07.11 on Digital Standards volume information, refer to the standard’s Document Summary page on
Imaging and Communication in Nondestructive Evaluation (DICONDE). the ASTM website.
Current edition approved June 1, 2010. Published June 2010. DOI:10.1520/ Available from National Electrical Manufacturers Association (NEMA), 1300
E2767–10. N. 17th St., Suite 1752, Rosslyn, VA 22209, http://www.nema.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2767 – 10
3. Terminology of the DICOM standard except as noted below in Table 1.
Table 1is not stand-alone and must be used in conjunctionwith
3.1 Definitions:
Part 3, sectionA.3 of the DICOM standard to have a complete
3.1.1 Nondestructive evaluation terms used in this practice
definition of the DICONDE CT information object. In addition
can be found in Standard Terminology for Nondestructive
to the DICONDE information modules specified in Practice
Examinations, E1316.
E2339 and this standard, the DICONDE CT IOD utilizes
3.1.2 ComputedTomography terms used in this practice can
additional DICOM standard information modules as noted in
be found in Standard Guide for Computed Tomography (CT)
Table 1. This IOD will use the Service-Object Pair (SOP)
Imaging, E1441.
Classes for the CT IOD as defined in Part 4 of the DICOM
3.1.3 DICONDE terms used in this practice are defined in
standard.
Practice E2339.
6.2 X-ray CT Multi-Frame Image IOD Description:
4. Summary of Practice
6.2.1 The X-ray CT Multi-Frame (CT-MF) Image Informa-
tion Object Definition specifies a multi-frame image that has
4.1 A fundamental principle of DICONDE is the use of
been created by an X-ray CT imaging device for NDE
standard definitions and attribute formats for data communica-
purposes. To avoid duplication of relevant material from the
tion and storage. This means all systems that are DICONDE
DICOM standard, the IOD definition will follow that for
compliant use a common data dictionary and common com-
Enhanced CT Images found in Part 3, section A.38 of the
munication protocols. To further standardization, the elements
DICOM standard except as noted below in Table 2. Table 2 is
in the data dictionary are organized into common groups
not stand-alone and must be used in conjunction with Part 3,
referred to as information modules. The data dictionary and
section A.38 of the DICOM standard to have a complete
information modules common to all NDE modalities are
definition of the DICONDE CT-MF information object. This
defined in Practice E2339.
IOD will use the Service-Object Pair (SOP) Classes for the
4.2 The data dictionary and information modules specified
Enhanced CTIOD as defined in Part 4 of the DICOM standard.
in Practice E2339 do not cover the information storage
requirements for each individual modality (CT, DR, CR, UT,
7. Information Modules
etc.).Additions to the data dictionary and information modules
are required to support the individual modalities. This practice
7.1 NDE CT Image Module:
contains the additions to the DICONDE data dictionary and
7.1.1 Table 3 specifies the Attributes that describe the NDE
information modules necessary for X-ray CT inspection.
X-ray CT image module.
4.3 The highest organizational level in the DICONDE
7.2 NDE X-ray CT Detector Module:
information model is the information object definition (IOD).
7.2.1 Table 4 specifies the Attributes that describe NDE
An information object definition is a collection of the infor-
X-ray CT Detectors.
mation modules necessary to represent a set of test results from
7.2.1.1 For X-ray CT Detector module, Detector Type
a specific modality. This practice contains information object
(0018,7004) is specified to use the following defined terms:
definitions for X-ray CT inspection.
DIRECT
5. Significance and Use SCINTILLATOR
7.2.1.2 For X-ray CT Detector module, Detector Configu-
5.1 Personnel that are responsible for the creation, transfer,
ration (0018,7005) is specified to use the following defined
and storage of X-ray tomographic NDE data will use this
terms:
standard. This practice defines a set of information modules
that along with Practice E2339 and the DICOM standard AREA
provide a standard means to organize X-ray tomography test
LINEAR
parameters and results. The X-ray CT test results may be
7.3 NDE X-ray CT Calibration Data Module:
displayed and analyzed on any device that conforms to this
7.3.1 Table 5 specifies the Attributes that describe NDE
standard. Personnel wishing to view any tomographic inspec-
X-ray CT calibration data.
tion data stored according to Practice E2339 may use this
7.4 NDE Enhanced CT Image Module.:
document to help them decode and display the data contained
7.4.1 Table 6 specifies the attributes that describe the NDE
in the DICONDE-compliant inspection record.
Enhanced CT Image Module.
7.4.2 Table 7 specifies the attributes that describe the NDE
6. Information Object Definitions
CT X-ray Details Functional Group macro.
6.1 X-ray CT Image IOD Description:
6.1.1 The X-ray CT Image Information Object Definition
8. Keywords
specifies an image that has been created by an X-ray CT
imaging device for NDE purposes. To avoid duplication of 8.1 DICOM; DICONDE; X-ray; computed tomography;
relevant material from the DICOM standard, the IOD defini- CT;digitaldatatransmission;digitaldatastorage;database;file
tion will follow that for CT Images found in Part 3, sectionA.3 format
E2767 – 10
TABLE 1 X-ray CT-Image Information Object Definition
A
DICOM Module DICONDE Module Reference Usage
Patient Component Practice E2339, Section 7 M
Clinical Trial Subject Not Applicable
General Study Component Study Practice E2339, Section 7 M
Patient Study Not Applicable
Clinical Trial Study Not Applicable
General Series Component Series Practice E2339, Section 7 M
Clinical Trial Series Not Applicable
General Equipment NDE Equipment Practice E2339, Section 7 M
Contrast/bolus Not Applicable
CT Image NDE CT Image 7.1 M
NDE CT Detector 7.2 U
X-Ray Collimator X-Ray Collimator DICOM Part 3, U
Section C.8.19.6.12
X-Ray Filtration X-Ray Filtration DICOM Part 3, U
Section C.8.7.10
X-Ray Grid X-Ray Grid DICOM Part 3, U
Section C.8.7.11
NDE Indication Practice E2339, Section 7 U
NDE Geometry Practice E2339, Section 7 U
NDE CT Calibration 7.3 U
Data
A
Definition of usage codes can be found in Part 3, section A.1.3 of the DICOM standard.
TABLE 2 X-ray CT-MF Image Information Object Definition
A
DICOM Module DICONDE Module Reference Usage
Patient Component Practice E2339, Section 7 M
Specimen Identification Not Applicable
Clinical Trial Subject Not Applicable
General Study Component Study Practice E2339, Section 7 M
Patient Study Not Applicable
Clinical Trial Study Not Applicable
General Series Component Series Practice E2339, Section 7 M
Clinical Trial Series Not Applicable
Synchronization Not Applicable
General Equipment NDE Equipment Practice E2339, Section 7 M
Enhanced Contrast/Bolus Not Applicable
Cardiac Synchronization Not Applicable
Respiratory Synchronization Not Applicable
Enhanced CT Image NDE Enhanced CT Image 7.4 M
NDE Indication Practice E2339, Section 7 U
NDE Geometry Practice E2339, Section 7 U
NDE CT Calibration Dat 7.3 U
Acquisition Context Needed for DICOM compatibility
A
Definition of usage codes can be found in Part 3, section A.1.3 of the DICOM standard.
E2767 – 10
TABLE 3 NDE CT Image Module Attributes
A
Attribute Name DICOM Tag DICONDE Tag VR VM Type Description
Image Type (0008,0008) CS 1-n 1 Image identification characteristics.
Samples Per Pixel (0028,0002) US 1 1 Number of samples per pixel (planes) in this image.
Photometric Interpretation (0028,0004) CS 1 1 Specifies the intended interpretation of the pixel data.
Bits Allocated (0028,0100) US 1 1 Number of bits allocated for each pixel data.
Bits Stored (0028,0101) US 1 1 Number of bits stored for each pixel data.
High Bit (0028,0102) US 1 1 Most significant bit for pixel data.
KVP (0018,0060) DS 1 2 Peak kilo voltage output of the X-ray generator used.
Acquisition Number (0020,0012) IS 1 2 A number identifying the single continuous gathering of data over a
period of time which resulted in this image.
Scan Options (0018,0022) CS 1-n 3 Parameters of the scanning sequence.
Data Collection Diameter (0018,0090) DS 1 3 The diameter in mm of the region over which data were collected.
Reconstruction Diameter (0018,1100) DS 1 3 Diameter in mm of the region from within which data were used in
creating the reconstruction of the image. Data may exist outside of
this portion of the region and portions of the component may exist
outside this region.
Distance Source to Detector (0018,1110) DS 1 3 Distance in mm from source to detector center.
Distance Source to Component (0018,1111) DS 1 3 Distance in mm from source to isocenter (center of field of view).
Gantry/Detector Tilt (0018,1120) DS 1 3 Nominal angle of tilt in degrees of the scanning gantry. Not intended
for mathematical calculations.
Table Height (0018,1130) DS 1 3 The distance in mm of the top of the part positioner table to the
center of rotation; below the center is positive.
Rotation Direction (0018,1140) DS 1 3 Direction of rotation of the source when relevant, about nearest
principal axis of equipment. Enumerated Values: CW = clockwise
CC = counterclockwise
Exposure Time (0018,1150) DS 1 3 Time of X-ray exposure in msec.
X-ray Tube Current (0018,1151) DS 1 3 X-ray Tube Current in mA.
Exposure (0018,1152) DS 1 3 The exposure expressed in mA, for example, calculated from
Exposure Time and X-ray Tube Current.
Exposure in µAs (0018,1153) DS 1 3 The exposure expressed in mµ, for example, calculated from
Exposure Time and X-ray Tube Current.
Filter Type (0018,1160) DS 1 3 Label for the type of filter inserted into the X-ray beam.
Generator Power (0018,1170) DS 1 3 Power in kW to the X-ray generator.
LINAC Energy (0009,XX02) IS 1 3 The energy of the LINAC in KeVe expressed in rads per minute.
LINAC Output (0009,XX04) IS 1 3 The output of the LINAC in Gys
Focal Spot (0018,1190) DS 1 3 Size of the focal spot in mm. For devices with variable focal spot or
multiple focal spots, small dimension followed by large dimension.
Convolution Kernel (0018,1210) DS 1 3 A label describing the convolution kernel or algorithm used to
reconstruct the data.
Revolution Time (0018,9305) FD 1 3 The time in seconds of a complete revolution of the source around
the gantry orbit or the complete rotation of a component on a
turntable.
Single Collimation Width (0018,9306) FD 1 3 The width of a single row of acquired data (in mm).
Total Collimation Width (0018,9307) FD 1 3 The width of the total collimation (in mm) over the area of active
X-ray detection.
Table Speed (0018,93
...