Dear FSL Group,
I am using tbss to analyze by diffusion data and am having the following problem: my preprocessed FA maps have a ring of high FA voxels surrounding parts of the brain. When I use these FA maps in my tbss analysis, I get strange distortions after the registration has been applied. Please see attached pictures to see what I mean. The normal erosion that tbss undertakes does not fully get rid of this rim of high FA voxels.
Does anyone know a solution to this?
Thank you for your help and kind regards,
Clara
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