A.59.4 Enhanced US Volume Functional Group Macros
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### A.59.4 Enhanced US Volume Functional Group Macros

Table A.59-2 specifies the use of the Functional Group Macros used in the Multi-frame Functional Groups Module for the Enhanced US Volume IOD.

Table A.59-2. Enhanced US Volume 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.
Plane Position (Patient) | C.7.6.16.2.3 | U
Plane Orientation (Patient) | C.7.6.16.2.4 | U
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 | C - Required if Cardiac Synchronization is used
Frame VOI LUT | C.7.6.16.2.10 | M
Real World Value Mapping | C.7.6.16.2.11 | U
Contrast/Bolus Usage | C.7.6.16.2.12 | C - Required if the Enhanced Contrast/Bolus Module is present
Patient Orientation in Frame | C.7.6.16.2.15 | U
Frame Display Shutter | C.7.6.16.2.16 | U
Respiratory Synchronization | C.7.6.16.2.17 | C - Required if Respiratory Synchronization is used
Plane Position (Volume) | C.7.6.16.2.21 | M - May not be used as a Shared Functional Group. See Section A.59.4.1.2.
Plane Orientation (Volume) | C.7.6.16.2.22 | M - May not be used as a Per-Frame Functional Group. See Section A.59.4.1.2.
Temporal Position | C.7.6.16.2.23 | C - Required if frames are temporally related and not temporally referenced to a Cardiac or Respiratory event
Image Data Type | C.7.6.16.2.24 | M
US Image Description | C.8.24.6.1 | M - May not be used as a Per-Frame Functional Group

#### A.59.4.1 Enhanced US Volume Functional Group Macros Content Constraints

##### A.59.4.1.1 US Image Description Macro

The value of Volumetric Properties (0008,9206) shall be VOLUME. The value of Volume Based Calculation Technique (0008,9207) shall be NONE.

##### A.59.4.1.2 Plane Position (Volume) and Plane Orientation (Volume) Macros

Image Position (Volume) (0020,9301) first value (X) shall be zero and second value (Y) shall be zero. Image Orientation (Volume) (0020,9302) values shall be 1\0\0\0\1\0. This ensures that the origins of each frame lies on the Volume Frame of Reference ZV axis, the rows of each frame are parallel to the Volume Frame of Reference XV axis, and the columns of each frame are parallel to the Volume Frame of Reference YV axis.

Adjacent planes in the volume shall be equally spaced in the Z direction.

### Note

1. More than one frame may be encoded for the same plane, for example, with a different temporal or cardiac cycle position.

2. Frames with the same value of Image Position (Volume) (0020,9301) will also have the same second value of Dimension Index Value (the spatial position Dimension); See Section C.8.24.3.3.

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