TTT.2.3 Case #3: Reconstruction From A Sub-region of All Image Frames
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### TTT.2.3 Case #3: Reconstruction From A Sub-region of All Image Frames

This application case is related to a regular reconstruction of the full field of view of a rotational acquisition followed by a specific reconstruction of a sub-region that contains an object of interest (e.g., interventional device implanted, stent, coils etc.).

#### TTT.2.3.1 User Scenario

The image acquisition system performs one rotational acquisition after the intervention, on the region of the patient where an implant has been placed.

Two 3D volumes are reconstructed; one of the full field of view of the projection images, another of a sub-region of each of the acquired frames, e.g., to extract the object of interest into a smaller volume data set. The second volume is likely performed at higher resolution and likely applies different 3D reconstruction techniques, for instance to highlight the material of the implant. The purpose is to overlap the two volumes and enhance the visibility of the object of interest over the full field volume.

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