TTT.2.2.3 Encoding Details
Prev | TTT.2.2 Case #2: Reconstruction From A Sub-set of Projection Frames | Next

#### TTT.2.2.3 Encoding Details

##### TTT.2.2.3.1 X-Ray 3D Angiographic Image IOD

###### TTT.2.2.3.1.1 X-Ray 3D Angiographic Acquisition Module Recommendations

This module encodes the important technical and physical parameters of the source SOP instances and the frames used to create the X-Ray 3D Angiographic instance.

Table TTT.2.2-1. X-Ray 3D Angiographic Acquisition Module Recommendations

Attribute Name | Tag | Recommendation
--- | --- | ---
X-Ray 3D Acquisition Sequence | (0018,9507) | One item since there is only one acquisition context that contributed to the reconstruction of the X-Ray 3D Angiographic image pixel data contents.
>Source Image Sequence | (0008,2112) |
>>Referenced Frame Number | (0008,1160) | Only include the frame numbers used for the reconstruction.
>Per Projection Acquisition Sequence | (0018,9538) | The content of the X-Ray 3D General Positioner Movement Macro only provides an overview of the Positioner data. When not all frames of the originating projection image are used, it is recommended to provide the patient-based Positioner Primary and Secondary Angles in the Per Projection Acquisition Sequence (0018,9538). The contents of the Per Projection Acquisition Sequence (0018,9538) need to be carefully aligned with the list of frame numbers in the Referenced Frame Numbers (0008,1160) attribute in the Source Image Sequence (0008,2112).

###### TTT.2.2.3.1.2 Frame Content Macro Recommendations

This module encodes the timing information of the frames, as well as dimension and stack index values.

Table TTT.2.2-2. Frame Content Macro Recommendations

Attribute Name | Tag | Recommendation
--- | --- | ---
Frame Content Sequence | (0020,9111) | Provides details for each frame.
>Frame Acquisition Duration | (0018,9220) | Use the elapsed time from the first to the last projection frame time used for this reconstruction.

Prev | Up | Next
TTT.2.2.2 Encoding Outline | Home | TTT.2.2.4 Example