Материал: part03

descriptionofallprocessingnecessarytointerprettheimage.​ Zero or more Items shall be included in this Sequence.​

This Sequence includes description of the specimen​ sampling step from an ancestor specimen, potentially back​ to the original part collection.​

See Section C.7.6.22.1.3.​

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C.7.6.22.1 Specimen Module Attributes​

C.7.6.22.1.1 Container Identifier and Specimen Identifier​

"Specimen" is the role played by a discrete physical object (or a collection of objects that are considered as a unit) that is the subject​ of pathology examination.​

A specimen is a physical object (or a collection of objects) when the laboratory considers it a single discrete, uniquely identified unit​ thatisthesubjectofoneormorestepsinthelaboratory(diagnostic)workflow.Thisincludesobjectsatalllevelsofprocessing,including​ fresh tissue, dissected organs, tissue embedded in paraffin, sections made from embedded tissue, and liquid preparations.​

Specimens are physically managed by being placed in or on a container. The concept of container includes buckets, cassettes, vials,​ and slides. While there is usually one specimen per container, it is possible, in some laboratory workflows, for multiple specimens to​ be in/on a container.​

Both specimens and specimen containers have logical identifiers for workflow management. The logical identifier of a container is​ usually conveyed on a label on the container. The specimen itself will typically not be physically labeled with its identifier. For the​ usualcaseofasinglespecimenin/onacontainer,thelogicalidentifiersmaybeidentical.However,whentherearemultiplespecimens​ in/onacontainer,eachspecimenreceivesadistinctlogicalidentifier.TheseidentifiersareencodedintheSOPInstanceusingAttributes​ Container Identifier (0040,0512) and Specimen Identifier (0040,0551).​

Note​

1.​Thisdefinitionof"specimen"extendsthecommondefinitionbeyondthepartorpartsthatweresubmittedforexamination​ (e.g., from surgery) to include any derivative piece that may be separately analyzed or examined, such as a block or​ slide preparation.​

2.​Although many Pathology Information Systems use a hierarchical system for identifying parts, blocks and slides, there​ should be no assumption made that this will be the case and in particular, there should be no attempt to parse a given​ Specimen Identifier to retrieve an accession number or other higher level identifier.​

C.7.6.22.1.2 Specimen Identifier and Specimen UID​

Specimen Identifier (0040,0551) must be unique at least within the Study; the actual scope of uniqueness is determined by the de-​ partmentalinformationsystemthatassignstheIDs.EachspecimenshallalsobeassignedagloballyuniqueSpecimenUID(0040,0554)​ that allows referencing beyond the scope of a Study. This UID may be used, for instance, if a specimen is delivered to another insti-​ tution for further analysis.​

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C.7.6.22.1.3 Specimen Preparation Sequence and Specimen Preparation Step Content Item Sequence​

Interpretation of specimen images requires information about the source of the specimen and its preparation (e.g., sampling, fixation,​ staining). The processing steps used to prepare a specimen are recorded in the Specimen Preparation Sequence (0040,0610). This​ Sequence may include one Item for each processing step (as defined in the laboratory workflow) in the history of the specimen, and​ those Items are composed of a set of Content Items in the Specimen Preparation Step Content Item Sequence (0040,0612).​

The Specimen Preparation Sequence may include description of the original part collected from the patient, the processing of that​ part,thesamplingoftissuefromthepartandthepreparationofthatsample,andthefurthersub-samplingandprocessingofthetissue.​ In other words, the description of a specific specimen may include descriptions of the specimen's ancestors.​

The Specimen Preparation Sequence Items shall be in ascending chronological order.​

C.7.6.22.1.4 Specimen Localization Content Item Sequence​

When there are multiple specimens in/on a container, the Specimen Localization Content Item Sequence (0040,0620) is used to​ identify the location of the specimen in the container, as there is no physical label with the Specimen Identifier. This Content Item​ Sequence, in accordance with TID 8004 “Specimen Localization”, allows the specimen to be localized by a distance in one to three​ dimensions from a reference point on the container, by an identified physical description such as a colored ink, or by its location as​ shown in a referenced image of the container. The referenced image may use an overlay, burned-in annotation, or an associated​ Presentation State SOP Instance to specify the location of the specimen.​

C.7.6.23 Enhanced Palette Color Lookup Table Module​

Table C.7.6.23-1 specifies the Attributes that define data flow through the Enhanced Blending and Display Pipeline. See Sec-​ tion C.7.6.23.1 for an overview of the Enhanced Blending and Display Pipeline.​

Table C.7.6.23-1. Enhanced Palette Color Lookup Table Module Attributes​

If absent, Bits Stored (0028,0101) bits of each value of Pixel Data​ (7FE0,0010) from this frame contributes to the Palette Color Lookup​ Table input.​

See Section C.7.6.23.3 for usage.​

>Include Table C.11-2b “VOI LUT Macro Attributes”​

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Enumerated Values:​

CONSTANT​

ONE_MINUS​

ALPHA_1​

ALPHA_2​

TABLE​

See Section C.7.6.23.4 for details.​

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Note​

Depending on the values of Blending LUT 1 Transfer Function​ (0028,1405)andBlendingLUT2TransferFunction(0028,140D)​ the Alpha LUT value may be ignored. It is recommended that​ IDENTITY be used if this is the case.​

Enumerated Values:​

NONE​

IDENTITY​

TABLE​

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