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DICOM PS3.3 2020a - Information Object Definitions​ Page 1441​

Table C.18.5-1. Waveform Reference Macro Attributes​

RequirediftheReferencedSOPInstanceisaWaveform​ that contains multiple Channels and not all Channels in​ the Waveform are referenced.​

C.18.5.1 Waveform Reference Macro Attribute Descriptions​

C.18.5.1.1 Referenced Waveform Channels​

Referenced Waveform Channels (0040,A0B0) is a multi-value Attribute that lists the channels referenced. Each channel is specified​ as a pair of values (M,C), where the first value is the Item number of Waveform Sequence (5400,0100) in the referenced object (i.e.,​ the Multiplex Group Number), and the second value is the Item number of Channel Definition Sequence (003A,0200) (i.e., the​ Channel Number) within the multiplex group.​

If the specified channel number is 0, the annotation applies to all channels in the multiplex group.​

Note​

As an example, an annotation that applies to the entire first multiplex group and channels 2 and 3 of the third multiplex group​ would have Referenced Waveform Channels (0040,A0B0) value 0001 0000 0003 0002 0003 0003.​

C.18.6 Spatial Coordinates Macro​

Table C.18.6-1 specifies the Attributes that convey Spatial Coordinates in an SCOORD Content Item. An SCOORD Content Item​ shall always be the Source Content Item of one or more SELECTED FROM Relationships with IMAGE Target Content Items. Each​ IMAGE Target Content Item shall contain a reference to one single-frame or multi-frame Image.​

Note​

The same set of spatial coordinates may be selected from more than one single-frame image, or more than one frame of a​ multi-frame image when the purpose of reference is applicable to multiple images. For example, the spatial coordinates may​ specify the outline of a sampling region at the same spatial location on multiple images acquired over time.​

Table C.18.6-1. Spatial Coordinates Macro Attributes​

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Required if the value of Referenced SOP Class UID (0008,1150) of the referenced​ image is 1.2.840.10008.5.1.4.1.1.77.1.6 (VL Whole Slide Microscopy Image). May​ be present otherwise.​

Enumerated Values:​

FRAME​relative to individual frame​

VOLUME​relative to Total Image Matrix​

If not present, Graphic Data values are defined relative to the frame pixel origin.​

Note​

The fiducial UID can be used to associate this set of graphics with other​

Content Items.​

C.18.6.1 Spatial Coordinates Macro Attribute Descriptions​

C.18.6.1.1 Graphic Data​

Graphic Data may be used to associate an anatomic or spatial Concept with a defined subset of one or more images. Graphic Data​ may be explicitly defined as a single point (i.e., to denote the epicenter of an anatomic site or lesion) or more than one point (i.e.,​ representing a set of points or an open or closed polygon).​

Note​

Spatial coordinates may be used to associate observational data with a set of Image features. Spatial coordinates also may​ be used to convey coordinates that are input data for a measurement.​

C.18.6.1.2 Graphic Type​

When annotation applies to an image, this Attribute defines the type of geometry of the annotated region of interest.​

Enumerated Values:​

POINT​ a single pixel denoted by a single (column,row) pair​ MULTIPOINT​multiple pixels each denoted by an (column,row) pair​

POLYLINE​ a series of connected line segments with ordered vertices denoted by (column,row) pairs; if the first and last vertices​ are the same it is a closed polygon​

CIRCLE​ a circle defined by two (column,row) pairs. The first point is the central pixel. The second point is a pixel on the peri-​ meter of the circle.​

ELLIPSE​ an ellipse defined by four pixel (column,row) pairs, the first two points specifying the endpoints of the major axis and​ the second two points specifying the endpoints of the minor axis of an ellipse​

C.18.7 Temporal Coordinates Macro​

Table C.18.7-1 specifies the Attributes that convey TCOORD Content Items. A TCOORD Content Item shall be the Source Content​ Item of one or more SELECTED FROM relationships with one or more SCOORD Content Items, one or more IMAGE Content Items,​ or one or more WAVEFORM Content Items.​

Note​

1.​Thesame setoftemporalcoordinatesmaybeselected frommorethanonesingle-frameimage,ormorethanone frame​ of a multi-frame image, or from images and waveforms when the purpose of reference is applicable to multiple objects.​

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For example, the definition of a sampling period at different spatial locations on multiple images and a synchronously​ acquired waveform.​

2.​Temporal coordinates may refer to spatial coordinates, which in turn refer to one or more frames or images, for example​ to indicate a region localized in both time and space.​

Table C.18.7-1. Temporal Coordinates Macro Attributes​

C.18.7.1 Temporal Coordinates Macro Attribute Descriptions​

C.18.7.1.1 Temporal Range Type​

This Attribute defines the type of temporal extent of the region of interest. A temporal point (or instant of time) may be defined by a​ waveform sample offset (for a single waveform multiplex group only), time offset, or absolute time.​

Enumerated Values:​

C.18.8 Container Macro​

Table C.18.8-1 specifies the Attributes that convey a CONTAINER Content Item.​

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Page 1444​ DICOM PS3.3 2020a - Information Object Definitions​

Table C.18.8-1. Container Macro Attributes​

C.18.8.1 Container Macro Attribute Descriptions​

C.18.8.1.1 Continuity of Content​

Continuity of Content (0040,A050) specifies whether or not all the Content Items contained in a CONTAINER are logically linked in​ a continuous textual flow, or are separate entities. It only applies to the children contained in the container, and not their children​ (which if containers themselves, will have the Attribute specified explicitly).​

Note​

1.​This allows the interspersing of measurements, codes, and image references, amongst text. For example, the following:​ "A mass of diameter = 3 cm was detected." can be represented by the following Content Items in a CONTAINER with​ a Continuity of Content (0040,A050) of CONTINUOUS:​

TEXT "A mass of"​

NUM "Diameter" 3 "cm"​

TEXT "was detected."​

2.​TheContinuityofContentappliesonlytosubsidiaryContentItemswithRelationshipTypeCONTAINS.Othersubsidiary​ ContentItems,e.g.,withRelationshipTypeHASCONCEPTMODorHASOBSCONTEXT,arenotpartoftheContinuity​ of Content, but apply to the Container as a whole.​

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C.18.8.1.2 Content Template Sequence​

A Template for SR Documents defines a set of constraints on the relationships and content (Value Types, Codes, etc.) of Content​ Items. Specific Templates for SR Documents are defined either by the DICOM Standard (see PS3.16) or by users of the Standard​ for particular purposes. Usage of Templates for SR Documents may improve comparability of essential data, facilitate data-entry and​ revisions, enable automatic processing and simplify presentation of information to the user.​

Note​

NewsubordinatetemplatesmaybefactoredoutofexistingTemplatesduringrevisionstotheStandardorrevisionstoprivate​ Template definitions. It is permissible for instances created by implementations made prior to such refactoring to omit iden-​ tification of a Template of which they had no future knowledge. Receivers should be wary of depending on the presence of​ identification information for subordinate templates.​

An SR Document consists of a Root CONTAINER Content Item with nested content, and as such may be defined by a Template​ specifyingasingleCONTAINERwithnestedcontent.Sub-treesofanSRDocumentmaysimilarlybedefinedbyaTemplatespecifying​ a single CONTAINER with nested content. If created using such a Template, the Root and/or sub-tree shall identify the Template in​ the CONTAINER Content Item. When a Template invokes (includes) another Template, the outermost invoking Template is the one​ identified as the defining Template for the CONTAINER in the Content Template Sequence (0040,A504).​

The Content Template Sequence (0040,A504) identifies the Template that was used in the creation of the associated Content Item​ and its subsidiary Content Items. A Template is identified by a Mapping Resource (0008,0105) (the entity that manages or registers​ the Template), and an identifier of the Template. DICOM Standard Templates are identified in Template Identifier (0040,DB00) using​ the CS value representation.​

The DICOM Template Identifier (0040,DB00) is a string of digits, without leading zeroes, and does not include the string "TID".​

C.18.9 3D Spatial Coordinates Macro​

Table C.18.9-1 specifies the Attributes that convey 3D Spatial Coordinates in an SCOORD3D Content Item.​

Table C.18.9-1. 3D Spatial Coordinates Macro Attributes​

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