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I have been reading a paper and I have been following its methodology step by step but there are a couple of issues I do not understand how to do and I would be very grateful if anyone of you could help me with them. *- First point it says: * "A diffusion-weighted image was rigidly transformed to T1 images and each T1 image was non linearly transformed to MNI space" Well, I have done it, but then it follows: *The concatenation of these two transformations was used to transform FA images to MNI space?!! How??* *- Second point it says*: *....the deep white matter regions from the ICBM-DTI-81 white matter labels atlas were removed from the resulting mask?! How?? *I figure that I have to binarize and set to 0 the labels from ICBM_DTI_81 atlas....but I am unsure about if this is correct.... Thank you in advance for all your kindness and your time. Yours sincerely, Rosalia.