Importing a VTK Geometry from 3D Slicer (CT Scan) into EP Workbench and Co-registering with Electroanatomical Maps

EP Workbench
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This post walks through a step-by-step workflow for importing anatomical geometry from a CT scan processed in 3D Slicer and co-registering it with an electroanatomical map in EP Workbench. This process is useful for combining anatomical and functional cardiac data for analysis or simulation.

Follow these steps:

  1. Load your CT dataset into 3D Slicer

  2. Use the Segment Editor to segment the chamber of interest (e.g., left ventricle) - Figure 1

    Figure 1
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  3. Right-click the segment and select Export visible segments to models - Figure 2 and Figure 3

    Figure 3
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    Figure 2
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  4. Save the model as a .vtk file via the Save dialog - Figure 4

    Figure 4
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  5. In EP Workbench, load your electroanatomical map (EAM) - Figure 5

    Figure 5
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  6. Go to File → Load → VTK and load your exported .vtk file - Figure 6 and Figure 7

    Figure 6
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    Figure 7
    Figure 71920×1111 108 KB

  7. Under Tools → Register meshes, select the EAM geometry as mesh 0 and the anatomical VTK model as mesh 1 - Figure 8 and Figure 9

    Figure 8
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    Figure 9
    Figure 91920×1111 81.4 KB

  8. Select three anatomical landmarks on both meshes (right-click on mesh 0 & shift + right-click on mesh 1), then press space to confirm - Figure 10

    Figure 10
    Figure 101920×1112 99.2 KB

  9. Click Register - Figure 11

    Figure 11
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  10. Done! Your anatomical model is now aligned with your electroanatomical data - Figure 12

    Figure 12
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