Материал: part03

See Section C.27.1.1.3.​

C.36.8.1 RT Segment Annotation Attribute Descriptions​

C.36.8.1.1 RT Segment Annotation Type Code Sequence​

In Table C.36.8-2, if the Segment Annotation Category Code Sequence (3010,002B) has the code value specified in the left column,​ the Context Group for Segment Annotation Type Code Sequence (3010,002C) shall be the one specified in the right column.​

Table C.36.8-2. RT Segment Annotation Type CIDs​

Code Value of Segment Annotation Category Code Sequence​ContextGroupforSegmentAnnotationTypeCodeSequence​

For code values in Segment Annotation Category Code Sequence (3010,002B) that are not present in Table C.36.8-2, the Baseline​ ContextGroupsforcodesinSegmentAnnotationTypeCodeSequence(3010,002C)aredefinedinCID7150“SegmentationProperty​ Categories” where applicable.​

C.36.8.1.2 Segmented RT Accessory Device Sequence​

RT accessory device identification information when this segment represents a device.​

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Note​

ForanRTaccessorydevice,typicallytheSegmentedPropertyCategoryCodeSequence(0062,0003)hasoneofthefollowing​ values:​

•​(130044, DCM, "Fixation or Positioning Device")​

•​(130045, DCM, "Brachytherapy Device")​

•​(260787004, SCT, "Physical Object")​

C.36.9 Segment Reference Module​

The Segment Reference Module references geometrical representations, such as regions of interest, surfaces, lines, or points, which​ have been associated with a Conceptual Volume.​

These referenced representations are referred to as segments.​

Table C.36.9-1. Segment Reference Module Attributes​

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Required if any Item in the Combination Segment Reference​ Sequence (3010,0024) combines segments that do not have​ the same Frame of Reference UID (0020,0052).​

May be present otherwise.​

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

>Include Table 10-11 “SOP Instance Reference Macro Attributes”​

C.36.9.1 Segment Reference Attribute Descriptions​

C.36.9.1.1 Segmentation SOP Instance Reference Sequence​

Only the SOP Classes contained in Table C.36.9-2 shall be referenced.​

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Table C.36.9-2. Permitted SOP Classes​

The column Referenced Attribute identifies the Attribute used to identify the geometric representation in the SOP Instance referenced​

in the Segmentation Referenced SOP Sequence (0008,1199).​

DependingontheSOPClassUID(0008,0016)intheReferencedSOPSequence(0008,1199)thecorrespondingattributeasspecified​ in the Required Referencing Attribute column is required to be present.​

ItisanticipatedthatinfutureadditionalreferencingAttributesmaybeneededtoaccommodatenewrepresentationsofsegmentations.​ HencethecollectionofRequiredReferencingAttributesinTableC.36.9-1SegmentReferenceModuleAttributesandtheconditionally​ required Type 1C Attributes in the Segment Reference Module may be extended.​

C.36.9.1.2 Combination Segment Reference Sequence​

A Conceptual Volume may be expressed as a combination of other segmented Conceptual Volumes. Those other segments are ref-​ erenced in the Conceptual Volume Segmentation Reference and Combination Macro (see section 10.34).​

TheConceptualVolumeCombinationFlag(3010,000E)shallbeYES.TheConceptualVolumeSegmentationDefinedFlag(3010,0010)​ shall be NO. The Conceptual Volume Constituent Segmentation Reference Sequence (3010,0012) in the Conceptual Volume Con-​ stituent Sequence (3010,0008) shall not be present since the segmented representation of a constituent of a combination is specified​ byanItemoftheSegmentReferenceSequence(3010,0021)asfollows:IfaconstituentintheConceptualVolumeConstituentSequence​ (3010,0008) is a combination its constituents must​

•​eithercontainareferencetoanItemintheSegmentReferenceSequence(3010,0021)whichcontainsaDirectSegmentReference​ Sequence (3010,0023), or​

•​be present in an Item of the Segment Reference Sequence (3010,0021) which contains the Combination Segment Reference Se-​ quence (3010,0024).​

All Conceptual Volume References in this Macro shall reference only segments that are defined in Items in the Direct Segment Ref-​ erence Sequence (3010,0023).​

C.36.9.1.3 Conceptual Volumes​

The Conceptual Volume UIDs of the Conceptual Volumes instantiated in either the Direct Segment Reference Sequence (3010,0023)​ ortheCombinationSegmentReferenceSequence(3010,0024)shallbeuniquewithintheSegmentReferenceSequence(3010,0021).​

C.36.10 RT Radiation Set Module​

TheRTRadiationSetModuledescribestreatmentfractionsthatcontainasetofbeamsorbrachytherapysetupsusedwithinatreatment​ sessiontohelpachievethedosimetricrequirementsofagivenTreatmentPhase.TheModulereferencesasetofRTRadiationinstances​ that describe the geometric and physical parameters that define the delivery of dose for a single fraction. In addition, the overall​ number of treatment fractions is defined, as well as possibly the fractionation scheme according to which, fractions will be delivered.​

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A Treatment Phase is achieved by delivering one or more RT Radiation Sets. The chronological relationships between RT Radiation​ Sets (the actual start of each set, the order or timing among sets, etc.) are recorded in Attributes outside the RT Radiation Set Module.​

Table C.36.10-1. RT Radiation Set Module Attributes​

Radiation Set.​

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

See Section C.36.10.1.2.​

>Include Table 10-11 “SOP Instance Reference Macro Attributes”.​

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