CIBC:Project:Triedman
From NCRR Biomedical Software Development, Engineering, and Dissemination Wiki
Contents |
Progress Summary
For current development visit the Cardio-MDC site, contact Matt Jolley for access
Segmentation: 3D Slicer, SCIRun app under development
Automated Segmentation: Under development
Meshing: Voxel based working, tetmeshing beta modules(CAMAL/tetgen), Mesquite/Verdict beta modules, under development
Electrode Insertion: Beta module, unstable, Under development
Modeling: Under development
Introduction
This is a wiki designed for facilitating communication in the development of individual tools for solving the the volume conductor problem in medical imaging based datasets with an eye toward modeling defibrillation in children. For an overview of the project please look to our collaboration wiki.
Events
2/10/06 Meeting with SPL Segmentation folks
3/1/06 Collaboration formalized and grant submitted to CIMIT for further work
Segmentation
Existing segmentations: 10 kg, 40 kg, 15 kg partial
SPL: We will attempt to apply level set techniques with Dr. Westin's group and adapt algorithms developed by Kilian Pohl.
SCIRun: McKay Davis and Josh Cates at SCI are also creating a segmentation powerapp which was demoed at the CIBC conference in April. It currently lacks a GUI but renders the evolving 3D segmentation in real time and will be very useful. Josh worked to develop ITK and many of the segmentation alorithms available in ITK will be added as useful.
Atlas: Once ~ 5 segmentations have been done we can possibly employ atlas based techniques with Dr. Westin and Dr. Warfield.
Data: Hoping to obtain 64 detector CT scans of children for improved ease of segmentation secondary to increased tissue differentiation.
Meshing
Currently using simple voxel based meshing created in SCIRun.
As detailed at the CIBC workshop, tetgen and CAMAL are both working as mesh generators, with tetgen appearing to be the better tool. The latest version of CAMAL has been behaving strangely. MESQUITE is being integrated to allow variable density meshing and mesh smoothing. VERDICT is being implemented to allow mesh quality assessment. Together this should provide a complete set of tools that takes models from NRRDs to tetrahedral SCIRun meshes which will benefit many researchers, including the MEG group at UCSF.
Electrode Insertion/Adaptive Remeshing
Dave Weinstein has built modules which allow the insertion of arbitrarily shaped linear and planar fields into an existing mesh with adaptive remeshing. It is currently crashes, but anticipate progress.
Electrode Insertion in Volume Conductor
FEM Modeling
The end result of the process above is the possibility of patient specific modeling of internal defibrillation in children.
Functional nets and datasets available on the xythos site.
