C.8.21.2.2 X-Ray 3D Craniofacial Image Contributing Sources Module
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##### C.8.21.2.2 X-Ray 3D Craniofacial Image Contributing Sources Module

This section describes the X-Ray 3D Craniofacial Image Contributing Sources Module. The attributes in this Module specify the overall characteristics of one or more sources that were used to create a X-Ray 3D Craniofacial Image SOP Class instance. Table C.8.21.2.2-1 contains the relevant IOD Attributes that describe X-Ray 3D Craniofacial Image Contributing Sources.

Table C.8.21.2.2-1. X-Ray 3D Craniofacial Image Contributing Sources Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Contributing Sources Sequence | (0018,9506) | 1 | A sequence that describes characteristics of the sources that are used to create a derived SOP Instance. One or more Items shall be included in this Sequence.
>Include Table 10-13 “General Contributing Sources Macro Attributes” |
>Include Table 10-14 “Contributing Image Sources Macro Attributes” |
>Acquisition Device Processing Description | (0018,1400) | 1C | Indicates any visual processing performed on the frame prior to exchange. See Section C.8.7.1.1.3. Required if present and consistent in the contributing SOP Instances.
>Acquisition Device Processing Code | (0018,1401) | 1C | Code representing the device-specific processing associated with the frame (e.g., Organ Filtering code). Required if present and have an equal value in the contributing SOP Instances.
>Imager Pixel Spacing | (0018,1164) | 1C | Physical distance measured at the receptor plane of the detector between the centers of each pixel specified by a numeric pair - row spacing value (delimiter) column spacing value in mm. Required if present and consistent in the contributing SOP Instances.

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