A.47.4 Enhanced XA Image Functional Group Macros
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### A.47.4 Enhanced XA Image Functional Group Macros

Table A.47-2 specifies the use of the Functional Group Macros used in the Multi-frame Functional Groups Module for the Enhanced XA Image IOD.

Table A.47-2. Enhanced XA Image Functional Group Macros

Functional Group Macro | Section | Usage
--- | --- | ---
Frame Content | C.7.6.16.2.2 | M - May not be used as a Shared Functional Group.
Referenced Image | C.7.6.16.2.5 | U
Derivation Image | C.7.6.16.2.6 | C - Required if the image or frame has been derived from another SOP Instance.
Cardiac Synchronization | C.7.6.16.2.7 | U
Frame Anatomy | C.7.6.16.2.8 | M
Frame VOI LUT | C.7.6.16.2.10 | M
Contrast/Bolus Usage | C.7.6.16.2.12 | C - Required if the Enhanced Contrast/Bolus Module is present
Pixel Intensity Relationship LUT | C.7.6.16.2.13 | C - Required if Pixel Intensity Relationship (0028,1040) equals LOG. May be present otherwise.
Frame Pixel Shift | C.7.6.16.2.14 | U
Patient Orientation in Frame | C.7.6.16.2.15 | C - Required if C-arm Positioner Tabletop Relationship (0018,9474) is present and equals YES. May be present otherwise.
Frame Display Shutter | C.7.6.16.2.16 | U
Respiratory Synchronization | C.7.6.16.2.17 | U
Irradiation Event Identification | C.7.6.16.2.18 | M
X-Ray Frame Characteristics | C.8.19.6.1 | U
X-Ray Field of View | C.8.19.6.2 | C - Required if Isocenter Reference System Sequence (0018,9462) is present. May be present otherwise.
X-Ray Exposure Control Sensing Regions | C.8.19.6.3 | U
X-Ray Frame Pixel Data Properties | C.8.19.6.4 | M
X-Ray Frame Detector Parameters | C.8.19.6.5 | C - Required if X-Ray Receptor Type (0018,9420) is present and equals DIGITAL_DETECTOR.
X-Ray Calibration Device Usage | C.8.19.6.6 | U
X-Ray Object Thickness | C.8.19.6.7 | U
X-Ray Frame Acquisition | C.8.19.6.8 | U
X-Ray Projection Pixel Calibration | C.8.19.6.9 | C - Required if C-arm Positioner Tabletop Relationship (0018,9474) is present and equals YES.
X-Ray Positioner | C.8.19.6.10 | C - Required if Image Type (0008,0008) Value 1 equals ORIGINAL and C-arm Positioner Tabletop Relationship (0018,9474) is present and equals YES. May be present otherwise.
X-Ray Table Position | C.8.19.6.11 | C - Required if Image Type (0008,0008) Value 1 equals ORIGINAL and C-arm Positioner Tabletop Relationship (0018,9474) is present and equals YES. May be present otherwise.
X-Ray Collimator | C.8.19.6.12 | C - Required if Image Type (0008,0008) Value 1 equals ORIGINAL. May be present otherwise.
X-Ray Isocenter Reference System | C.8.19.6.13 | U - May not be used if C-arm Positioner Tabletop Relationship (0018,9474) is not present or equals NO.
X-Ray Geometry | C.8.19.6.14 | C - Required if Projection Pixel Calibration Sequence (0018,9401) is present. May be present otherwise.

#### A.47.4.1 Enhanced XA Image Functional Group Macros Content Constraints

##### A.47.4.1.1 Frame Anatomy Functional Group Macro

The Defined CID for the Anatomic Region Sequence (0008,2218) shall be CID 4042 “XA/XRF Anatomy Imaged”.

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