Brain imaging

Robert Hasson, Applied Mathematics, investigates the properties of inverse problems and in particular a brain imaging technique called Magnetoencephalography (MEG).

The IMPACT cluster is used to segment MRI slices to produce smooth surfaces which accurately follow brain surfaces. In turn these smooth surfaces are used to create integration meshes so that the Boundary Element Method (BEM) can be used to relate brain sources to MEG measurements.

Once a BEM model has been constructed for a subject then the process of analysing MEG measurement data for that subject can begin. The process of contructing a BEM model is very time consuming (currently about 4 days computation time per subject if there are no complications). Without the IMPACT cluster the current project which compares data across ten subjects would not be feasible.