A.7.2.8 Boundary
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#### A.7.2.8 Boundary

The act class contains a list of integer values for the referenced frames of a DICOM multi-frame image SOP instance. It identifies the frame numbers within the Referenced SOP Instance to which the reference applies. The first frame shall be denoted as frame number 1. This act class shall be used if the referenced DICOM SOP instance is a multi-frame image and the reference does not apply to all frames.

Table A.7.2-5. Boundary Act Class

Attribute | Data Type | Multiplicity | Value
--- | --- | --- | ---
classCode | CS | 1..1 | OBS
moodCode | CS | 1..1 | EVN
templateId | LIST<II> | 1..* |
code | CE | 1..1 | < Code Value (0008,0100): 113036 as code property, 1.2.840.10008.2.16.4 as codeSystem property, DCM as codeSystemName property, Code Meaning (0008,0104): "Group of Frames for Display" as displayName property >
value | LIST<INT> | 1..* | < Referenced Frame Number (0008,1160)> Identifies the frame numbers within the Referenced SOP Instance to which the reference applies. The first frame shall be denoted as frame number 1. Values shall be provided if the Referenced SOP Instance is a multi-frame image and the reference does not apply to all frames.

##### A.7.2.8.1 CDA Mapping (Class Name and Attributes used for CDA Documents)

- Act Clone Name: ObservationAct clone name of the CDA entry is "Observation" instead of "Boundary".

- templateId value (Table A.7.1-5): Set root portion of II to "2.16.840.1.113883.10.20.6.2.11" (identifies the template that defines constraints on "Boundary Observation" of CDA Diagnostic Imaging Reports as specified by CDA R2 DIR IG).

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