Draft Status
Draft - team will hold off on page creation
Category
Segmentation / Classification / Landmarking
Key Investigators
- Chi Zhang (Texas A&M College of Dentistry, US)
- Rafael Palomar (Norwegian University of Science and Technology, Norway)
- Paul Baksic (INRIA, France)
- Steve Pieper (Isomics Inc., US)
Project Description
A reproducible meshing workflow is essential for reproducible and efficient FEM simulation. Meshing is a laborious and subjective process due to complex tissue geometry. First, orbital tissue are difficult to segment.
To simplify set up for tracking orbital tissue position changes after fracture repair, we are using a multi-material unified orbital tissue mesh, in which elements in different regions are assigned different tissue material properties. This helps bypassing many complex setups, including define boundary conditions of tightly contact multiple soft tissue.
Multi-material mesh requires generating fine elements at the tissue boundaries to better capture the geometry and assign different material properties accordingly. Currently, this can be done in gmsh by constructing a distance field from the surface within a unified mesh. However, this usually leads to higher number of elements, thus limiting simulation
However, the process can requires significant manual preprocessing. A challenge is local fat herniation and complicated fractured boundary.
Objective
- Continue the automated segmentation training using Monai-nnUNet.
- Streamline manual processing, including handling patient-specifc fat herniation and fracture patterns.
- Quantify the effect of different levels of mesh refinement on quantifying tissue position and shape changes.
- Explore different methods for multi-material meshing for balancing simulation speed and geometric accuracy.
Approach and Plan
- Describe specific steps of what you plan to do to achieve the above described objectives.
Progress and Next Steps
- Describe specific steps you have actually done.
Illustrations
No response
Background and References
No response
Draft Status
Draft - team will hold off on page creation
Category
Segmentation / Classification / Landmarking
Key Investigators
Project Description
A reproducible meshing workflow is essential for reproducible and efficient FEM simulation. Meshing is a laborious and subjective process due to complex tissue geometry. First, orbital tissue are difficult to segment.
To simplify set up for tracking orbital tissue position changes after fracture repair, we are using a multi-material unified orbital tissue mesh, in which elements in different regions are assigned different tissue material properties. This helps bypassing many complex setups, including define boundary conditions of tightly contact multiple soft tissue.
Multi-material mesh requires generating fine elements at the tissue boundaries to better capture the geometry and assign different material properties accordingly. Currently, this can be done in gmsh by constructing a distance field from the surface within a unified mesh. However, this usually leads to higher number of elements, thus limiting simulation
However, the process can requires significant manual preprocessing. A challenge is local fat herniation and complicated fractured boundary.
Objective
Approach and Plan
Progress and Next Steps
Illustrations
No response
Background and References
No response