Материал: part03

DICOM PS3.3 2020a - Information Object Definitions​ Page 551​

Table C.7.6.16-1. Multi-frame Functional Groups Module Attributes​

>Include one or more Functional Group Macros that are​For each IOD that includes this Module, a table is defined in which the​ shared by all frames. The selected Functional Group​ permitted Functional Group Macros and their usage is specified.​

Macros shall not be present in the Per-frame Functional​

Groups Sequence (5200,9230).​ The Item may be empty if the requirements for inclusion of the Functional​ Groups are not satisfied.​

One or more Items shall be included in this Sequence. The number of​

ItemsshallbethesameasthenumberofframesintheMulti-frameimage.​

See Section C.7.6.16.1.2 for further explanation.​

Requiredifforanyframe,therearePer-FrameFunctionalGroupsthatare​ not empty.​

>Include one or more Functional Group Macros.​ For each IOD that includes this Module, a table is defined in which the​ permitted Functional Group Macros and their usage is specified.​

- Standard -​

C.7.6.16.1 Multi-frame Functional Groups Module Attribute Description​

C.7.6.16.1.1 Functional Group​

A Functional Group is a set of Attributes that are logically related and may vary together. Functional Groups are defined by editorial​ convention in Macros. Those Functional Groups that apply to all frames are included in the Shared Functional Groups Sequence​ (5200,9229).FunctionalGroupswhoseAttributevaluesmayvaryfromframetoframeareincludedinthePer-frameFunctionalGroups​ Sequence (5200,9230).​

- Standard -​

A single Functional Group shall not be included in both the Shared Functional Groups Sequence (5200,9229) and the Per-frame​ Functional Groups Sequence (5200,9230).​

Note​

1.​In the case of a SOP Instance containing a single frame, some Functional Groups may be contained in the Shared​ Functional Groups Sequence (5200,9229) and others in the one Item of the Per-frame Functional Groups Sequence​ (5200,9230).​

2.​Even if there are no Functional Groups in the Per-frame Functional Groups Sequence (5200,9230) an empty Item is​ encoded for every frame, which an IOD is permitted to specify for a Type 1 Sequence, as described in PS3.5, unless​ allItemsforallframesareempty,inwhichcasethePer-frameFunctionalGroupsSequence(5200,9230)maybeentirely​ omitted.​

ItmayhappenthattheDataSetfortheItemofaFunctionalGroupSequenceAttributedoesnotcontainanyAttributes(e.g.,acondition​ for a single Type 1C Attribute in the Sequence is not met). In this case, the Item is included but is empty.​

Note​

PS3.5 describes that an empty Item is permitted for a Type 1 or Type 2 Sequence depending on what the IOD in PS3.3​ defines for the Data Set that is defined for that Sequence Item.​

It may happen that a Functional Group Sequence Attribute is not required for a particular frame (e.g., an optional Functional Group).​ In this case the Functional Group Sequence Attribute is not included in the Per-frame Functional Groups Sequence (5200,9230) Item​ for that frame.​

Note​

The absence of the Sequence Attribute corresponding to a particular Functional Group indicates that the Functional Group​ is not used for a particular frame.​

Private Functional Groups may be defined. The Attributes of such a group may be Standard or Private Attributes. A Private Functional​ Group may not replicate the Attributes of a Standard Functional Group.​

A Private Functional Group can be added to either the Shared Functional Groups Sequence (5200,9229) or the Per-frame Functional​

Groups Sequence (5200,9230).​

C.7.6.16.1.2 Per-frame Functional Groups Sequence​

The Per-frame Functional Groups Sequence Attribute (5200,9230) consists of a Sequence of Items. Each Item describes the frame​ of the same rank in the multi-frame pixel data. The first Item describes frame 1, the second Item describes frame 2, etc. Frames are​ implicitly numbered starting from 1. See Figure C.7.6.16-1.​

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Other Attributes

Note: The Functional Group Macros A, B, C, etc. are examples to illustrate the Multi-frame Functional Groups.

The actual Functional Group Sequences are defined elsewhere.

Figure C.7.6.16-1. A Graphical Presentation of the Multi-frame Functional Groups Structure​

C.7.6.16.1.3 SOP Instance UID of Concatenation Source​

TheSOPInstanceUIDofConcatenationSource(0020,0242)AttributecontainstheSOPInstanceUIDoftheoriginal,notconcatenated,​ SOP Instance and does not change when a concatenation is created. It is independent of Concatenation UID (0020,9161) because​ aSOPInstancecanbedividedintoconcatenationsonlyduringexchangeandtherecanbemorethanoneconcatenationwithdifferent​ Concatenation UIDs of an original SOP Instance; See Figure C.7.6.16-1a.​

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SOP Instance UID of Concatenation Source does not change across Concatenations

Figure C.7.6.16-1a. SOP Instance UID of Concatenation Source​

C.7.6.16.2 Common Functional Group Macros​

The following sections contain Functional Group Macros common to more than one IOD specification.​

Note​

The Attribute descriptions in the Functional Group Macros are written as if they were applicable to a single frame (i.e., the​ Macro is part of the Per-frame Functional Groups Sequence). If an Attribute is applicable to all frames (i.e., the Macro is part​ of the Shared Functional Groups Sequence) the phrase "this frame" in the Attribute description shall be interpreted to mean​ "for all frames".​

C.7.6.16.2.1 Pixel Measures Macro​

Table C.7.6.16-2 specifies the Attributes of the Pixel Measures Functional Group Macro.​

Table C.7.6.16-2. Pixel Measures Macro Attributes​

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