Dear Stephen,
I got another question regarding the edge displacement results. After applying voxel-wised SIENA, I took one cluster on the frontal lobe as a mask, showing significant regional brain atrophy difference between two groups, to extract the mean edge displacement for each group. The results showed the mean edge displacement was -0.03 mm per year in controls whose PBVC was 0.45% per year. Do you think whether these results are reasonable? Thank you.
Joyce
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