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Simulate orbit surgery using SlicerSOFA

Key Investigators

• Chi Zhang (Texas A&M College of Dentistry, US)
• Rafael Palomar (Oslo University Hospital, Norway)
• Steve Pieper (Isomics, US)
• Paul Baksic (INRIA, France)

Project Description

Simulating orbital fracture repair process using SlicerSOFA.

Surgical Guidance using MatrixOrbital preformed plates from DePuy Synthesis: https://www.jnjmedtech.com/en-US/product/matrixorbital-preformed-orbital-plates

Objective

1. Objective A. Create a volumetric model of the plate using SegmentMesher and bend it using SlicerSOFA. The challenge is the complicated plate geometry (meshed plate).
2. Objective B. Deform a simple orbital tissue volumetric model using SlicerSOFA.
3. Objective C. Retract orbital tissue model within the orbit to create space.
4. Objective D. Auto-segmentation of fractured orbit and tissue. Currently using TotalSegmentator to segment the globe and extraocular muscles. The performance for fractured orbit, especially more severe cases, need to be explored. Orbital fat tissue and maxillary sinus also need to be added to the model.

Approach and Plan

Currently, I was able to do a simple simulation in SOFA. Models are prepared in Gmsh. My goal is to transfer all of these processes, including model preparation, in Slicer and SlicerSOFA.

1. Segmentation using TotalSegmentator and DentalSegmentator. Orbital fat tissue and maxillary sinus also need to be added to the model.

1. Volumetric model preparation using Gmsh. Plate geometry is too complicated and can only be created in Gmsh but not in SegmentMesher.

1. Did a simple orbital tissue retraction in SOFA. The retractor model is created using Fiducial to Model module in Slicer.

Progress and Next Steps

1. Describe specific steps you have actually done.

Illustrations

Surgical Guidance using MatrixOrbital preformed plates from DePuy (see below for reference).

Transconjunctival approach for retracting orbital tissue. From: https://surgeryreference.aofoundation.org/cmf/pediatric-trauma/midface/orbital-floor/reconstruction

Background and References

Surgical Guidance using MatrixOrbital preformed plates from DePuy Synthesis: https://www.jnjmedtech.com/en-US/product/matrixorbital-preformed-orbital-plates