SCS Coordinates estimation from Brainstorm to Matlab

Discussions
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1

Hello, how can I export SCS coordinates (i.e. related to the tip of an electrode) to Matlab by just clicking on the image I am displaying?
Thank you

2

The coordinates of the tip of the electrodes is saved the channel file:
https://neuroimage.usc.edu/brainstorm/Tutorials/Epileptogenicity#On_the_hard_drive

If you want to get interactively the position of the cursor in the MRI viewer:

hFig = gcf;
sMri = panel_surface('GetSurfaceMri', hFig);
Handles = bst_figures('GetFigureHandles', hFig);
XYZ = figure_mri('GetLocation', 'scs', sMri, Handles)
1 Like
3

Thank you Francois, this is very helpful!
We actually need this to estimate the contact spacing that is a mandatory information to place the sEEG contacts on the MRI viewer. Since we only know the # of contacts, we need to calculate the length of the electrode from the MRI viewer and thus estimate the contact spacing. Hopefully this will work.

4

Can't you ask the neurosurgeon what electrodes where implanted?

5

no, when dealing with retrospective data collected in the past we cannot retrieve this information unfortunately