TTT.2.4.3.2 X-Ray 3D Angiographic Image IOD
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##### TTT.2.4.3.2 X-Ray 3D Angiographic Image IOD

###### TTT.2.4.3.2.1 X-Ray 3D Angiographic Image Contributing Sources Module Recommendations

This module encodes the source SOP instance(s) used to create the X-Ray 3D Angiographic instance.

Table TTT.2.4-2. X-Ray 3D Angiographic Image Contributing Sources Module Recommendations

Attribute Name | Tag | Recommendation
--- | --- | ---
Contributing Sources Sequence | (0018,9506) | One item for each of the originating instances that was used for the reconstruction of the X-Ray 3D Angiographic image.

###### TTT.2.4.3.2.2 X-Ray 3D Angiographic Acquisition Module Recommendations

There are multiple acquisition contexts, one per rotation of the equipment. This module encodes the frame numbers of the source SOP instance that belong to each acquisition context, as well as the important technical and physical parameters of the source SOP instances used to create the X-Ray 3D Angiographic instance.

Table TTT.2.4-3. X-Ray 3D Angiographic Acquisition Module Recommendations

Attribute Name | Tag | Recommendation
--- | --- | ---
X-Ray 3D Acquisition Sequence | (0018,9507) | One item for each acquisition context (i.e., each rotation) that contributed to the reconstruction of the X-Ray 3D Angiographic image pixel data contents.
… |  |
>Source Image Sequence | (0008,2112) | One item for each acquisition context.
>>Referenced SOP Class UID | (0008,1150) |
>>Referenced SOP Instance UID | (0008,1155) | The source SOP instance where this rotation belongs.
>>Referenced Frame Number | (0008,1160) | The frame numbers of the projections corresponding to this rotation.
… |  |
>Per Projection Acquisition Sequence | (0018,9538) | The content of this sequence needs 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.2.4.3.2.3 Frame Content Macro Recommendations

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

Table TTT.2.4-4. 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 projection frame time of the first rotation to the last projection frame time of the last rotation used for this reconstruction.

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