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
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  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
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  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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1 Like
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Dear tomasz.jadczyk,

Thank you for your post.

  1. Is this possible with CMR instead of CT?
  2. Is it possible to add different image modalities to one EAM?

Kind regards,

Imran Jamal Iversen MD, PhD-fellow