Hi all,
To have an index of the probability of connection between two ROI, i use the waytotal divided by the volume of the seed ROI.
My seed ROI is a relative big sphere at the border between the gray and white matter and a significant proportion of voxels are is gray matter.
In this case, is not it better to divide only by my ROI voxels that are part of the white matter (using a FA threshold or white matter segmentation on T1)?
Thank you very much,
Romain
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