Материал: part03

Note​

1.​Retired. See PS3.3-2011.​

2.​The Audio Module (Retired) was previously included in this IOD but has been retired. See PS3.3-2004.​

A.20.3.1 RT Fraction Scheme Module​

The RT Fraction Scheme Module is structured to be used together with the RT Beams Module or RT Brachy Application Setups​ Module. If beams are referenced in the RT Fraction Scheme Module, all such beams shall be included in the RT Beams Module if it​ is present. Similarly, if brachy application setups are referenced in the RT Fraction Scheme Module, all such setups shall be included​ in the RT Brachy Application Setups Module if it is present. However, the RT Fraction Scheme Module can be used without the RT​ Beams Module or RT Brachy Application Setups Module if no beams or brachy application setups are referenced, and the RT Beams​ Module or RT Brachy Application Setups Module can also be used without the RT Fraction Scheme Module if no fraction scheme​ information is available.​

A.20.3.2 RT Prescription Module​

The RT Prescription Module provides for the inclusion of dose prescription information pertinent to the complete plan, which may​ comprise several fraction schemes, themselves consisting of many beams.​

A.20.3.3 RT Tolerance Tables Module​

The RT Tolerance Tables Module provides information concerning machine tolerances as they apply to the whole treatment plan.​ Tolerances are applied by reference to a tolerance table within the RT Tolerance Tables Module for beams contained within the RT​ Beams Module.​

A.20.3.4 RT Patient Setup Module​

The RT Patient Setup Module provides information concerning Patient setup parameters and fixation devices as they apply to the​ whole treatment plan. Patient setup information within the RT Patient Setup Module is referenced by beams contained within the RT​ Beams Module.​

A.21 Positron Emission Tomography Image IOD​

A.21.1 PET Image IOD Description​

ThePositronEmissionTomography(PET)ImageInformationObjectDefinitionspecifiesanimagethathasbeencreatedbyaPositron​ Tomographimagingdevice,includingdedicatedPETcamerasandNuclearMedicineimagingdevicesoperatingincoincidencemode.​ This includes data created by external detection devices that create images of the distribution of administered radioactive materials,​ specifically positron emitters, in the body. Depending on the specific radiopharmaceuticals administered and the particular imaging​ procedure performed, problems involving changes in metabolism, function, or physiology can be investigated and various region​ pathologies can be studied. For these problems, quantitation of image data in absolute activity and physiological units is important.​ In addition, the PET Image IOD specifies attenuation (transmission) images used for correction and anatomical reference of emission​ images.​

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A.21.2 PET Image IOD Entity-Relationship Model​

This IOD uses the E-R Model in Section A.1.2, with only the Image IE below the Series IE.​

A.21.3 PET Image IOD Module Table​

Table A.21.3-1 specifies the Modules of the PET Image IOD.​

Table A.21.3-1. PET Image IOD Modules​

A.21.3.1 Acquisition Context Module​

TheDefinedTIDforAcquisitionContextSequence(0040,0555)isTID3470“NM/PETAcquisitionContext”,whichincludesdescription​ of the cardiovascular rest or stress state, and the blood glucose measurement.​

The Acquisition Context information may be entered during acquisition, or obtained from the Modality Worklist using information​ supplied in the Protocol Context, using TID 15101 “NM/PET Protocol Context”.​

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A.22 Standalone PET Curve IOD​

Retired. See PS3.3-2004.​

A.23 Stored Print IOD​

Retired. See PS3.3-2004.​

A.24 Hardcopy Grayscale Image IOD​

Retired. See PS3.3-2004.​

A.25 Hardcopy Color Image IOD​

Retired. See PS3.3-2004.​

A.26 Digital X-Ray Image IOD​

A.26.1 DX Image IOD Description​

TheDigitalX-Ray(DX)ImageInformationObjectDefinitionspecifiesanimagethathasbeencreatedbyadigitalprojectionradiography​ imaging device.​

Note​

1.​This includes but is not limited to: chest radiography, linear and multi-directional tomography, orthopantomography and​ skeletalradiography.Acquisitionofimagedatamayincludebutisnotlimitedto:CCD-basedsensors,stimulablephosphor​ imagingplates,amorphousselenium,scintillationbasedamorphoussiliconandsecondarycaptureoffilm-basedimages.​

2.​Specific IODs are defined for intra-oral radiography and mammography that further specialize the DX IOD.​

A DX image shall consist of the result of a single X-Ray exposure, in order to ensure that the anatomical and orientation Attributes​ are meaningful for the image, permitting safe annotation, appropriate image processing and appropriate dissemination.​

Note​

1.​Thisrequirementspecificallydeprecatesthecommonfilm/screenandComputedRadiographypracticeofmakingmultiple​ exposures on different areas of a cassette or plate by using lead occlusion between exposures. Such acquisitions could​ be separated and transformed into multiple DX images during an appropriate quality assurance step by an operator.​

2.​This requirement does not deprecate the acquisition of multiple paired structures during a single exposure, provided​ that they can be described by the relevant orientation Attributes. For example, an AP or PA projection of both hands​ side by side is typically obtained in a single exposure, and can be described by a Patient Orientation (0020,0020) of​ R\H or L\H since both hands are in the same traditional Anatomical Position. See Annex A “Explanation of Patient Ori-​ entation (Normative)” in PS3.17.​

TheDXImageIODisusedintwoSOPClassesasdefinedinPS3.4StorageServiceClass,aSOPClassforstorageofimagesintended​ for presentation, and a SOP Class for storage of images intended for further processing before presentation. These are distinguished​ by their SOP Class UID and by the Enumerated Value of the mandatory Attribute in the DX Series Module, Presentation Intent Type​ (0008,0068).​

A.26.2 DX Image IOD Entity-Relationship Model​

This IOD uses the E-R Model in Section A.1.2, with only the Image IE below the Series IE.​

A.26.3 DX Image IOD Module Table​

Table A.26-1 specifies the Modules of the DX Image IOD.​

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Page 254​ DICOM PS3.3 2020a - Information Object Definitions​

Table A.26-1. Digital X-Ray Image IOD Modules​

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Note​

1.​The Overlay Plane requirement is determined by the presence of "graphic annotation". Graphic annotation includes​ user or machine drawn graphics or text (such as computer assisted diagnosis) to indicate regions of interest or descrip-​ tions. It specifically does not include Patient or image identification or technique information that is defined in other At-​ tributes of the IOD.​

2.​The Device Module and Intervention Module are User optional, though it is desirable that, if present, they are stored by​ an SCP. It is recognized that in some cases the digital image acquisition system will not have a user interface or direct​ connection that allows acquisition of these parameters, even if device or therapy have been used.​

3.​The Common Frame of Reference Information Entity Modules, X-Ray Collimator Module, DX Positioning Module and​ X-Ray Tomography Acquisition Module are User optional, though it is desirable that, if present, they are stored by an​ SCP. It is recognized that in some cases the parameters of the mechanical devices used for collimation, positioning​ and tomography may not be available to a digital image acquisition system that is not integrated with the X-Ray gener-​ ation and positioning system.​

4.​The Image Histogram Module may contain a single or multiple statistical representations of the pixel data used to derive​ the VOI LUT Module, or intended to be used to derive or replace the VOI LUT Module. The Image Histogram Module​ may contain statistics of a subset of the stored image pixel data (such as from a cropped area or region of interest that​ is not the full field of view) that are useful for deriving a better VOI LUT than might be derived from the statistics obtained​ from the entire stored pixel data.​

5.​TheSpecimenIdentificationModulewaspreviouslyincludedinthisIODbuthasbeenretired,anditsfunctionalityreplaced​ by the Specimen Module. See PS3.3-2008.​

6.​The VOI LUT Module Attributes and behavior are further specialized in the DX Image Module.​

7.​The Curve Module (Retired) was previously included in this IOD but has been retired. See PS3.3-2004.​

A.26.4 Overlay Plane Module​

If the Overlay Plane Module is present, any Overlays defined in that Module shall store the overlay data in Overlay Data (60xx,3000),​ and not any unused high bits in Pixel Data (7FE0,0010).​

A.26.5 Acquisition Context Module​

TheAcquisitionContextModulemaybeusedtoencodeinformationaboutconditionspresentduringacquisitionthatarenotdescribed​ by specific Attributes in other Modules of the IOD.​

The Baseline TID shall be TID 3460 “Projection Radiography Acquisition Context”.​

A.27 Digital Mammography X-Ray Image IOD​

A.27.1 Digital Mammography X-Ray Image IOD Description​

The Digital Mammography X-Ray Image Information Object Definition specifies an image that has been created by a digital mammo-​ graphy projection radiography imaging device.​

Note​

It meets all of the requirements of the DX IOD in Section A.26 in addition to those specified in this section.​

The Digital Mammography Image IOD is used in two SOP Classes as defined in PS3.4 Storage Service Class, a SOP Class for​ storageofimagesintendedforpresentation,andaSOPClassforstorageofimagesintendedforfurtherprocessingbeforepresentation.​ These are distinguished by their SOP Class UID and by the Enumerated Value of the mandatory Attribute in the DX Series Module,​ Presentation Intent Type (0008,0068).​

A.27.2 Digital Mammography X-Ray Image IOD Entity-Relationship Model​

This IOD uses the E-R Model in Section A.1.2, with only the Image IE below the Series IE.​

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