Realistic head model: FEM with Duneuro
Authors: Takfarinas MEDANI,
This forward model uses a finite element element method (FEM) and was developed by the ...(link). It uses the volume mesh of the realistic head model. The goal of this forward solution is mostly for EEG users, to provide more accurate results than the spherical models and more complex geometry than the BEM. It is not necessary for MEG users, as the "overlapping spheres" method gives similar results but much faster. This method is illustrated using the tutorial EEG and epilepsy or similar data (todo).
refe to these point : http://duneuro.org/
and to the documentation from here :
https://gitlab.dune-project.org/duneuro/duneuro/wikis/home
Here we will describe the FEM and run some examples
Duneuro
duneuro is an open-source C++ software library for solving partial differential equations in neurosciences using mesh bases methods. It is based on the DUNE library and its main features include solving the electroencephalography (EEG) and magnetoencephalography (MEG) forward problem and providing simulations for brain stimulation.
Requirements
Duneuro is build on top of DUNE Library, at this time (sept 2019) these libraries work only on Linux systems. However we are able to run generate binaries for windows and can be easily used from Matlab for all platforms.
However if you want to use the source code of Duneuro you can visite: http://duneuro.org/
We also put here :
The main steps you need in order to compile for windows are listed here :
https://github.com/svdecomposer/brainstorm-duneuro
We distribute the binary files for Windows/Ubunto 64bit systems, you don't need to installan extra Microsoft software package to run Duneuro
- Microsoft Visual C++ 2010 Redistributable Package (x64).
FEM surfaces / Volume generation
Volume generation from surface files
In this part you can generate your FEM mesh from surfaces that you can get fron the segmentation software (brainSuite, FreeSurfer ....).
This process will
- merge the surfaces,
- check the self intersecting
- fixe the size of the mesh
- generate the volum mesh
- visual checking ...
- TODO : may be we can add some mesh auqlity measures ??
Volume generation from T1 MRI data
Head model based on the level set approach
Forward model
Head model
Number of layers, conductivity value,
Electrode model
Check the position of the electrodes and align to the head model (projection if needed)
Source model
Advanced paramaters
Additional documentation
Reported Errors & alternative solution
The MEEG forward problem with the FEM
License