Dear all,
I am processing anatomic (T1-weighted) images for volumetric study and I have a problem with New Segment. When I run it several times on the same image (copy/paste before running NS), the segmented images are always different. These differences are invisible to the naked eye but when I calculate volumes (of GM, WM and CSF) with the get_totals script, there are sometimes big volume differences (10 mL) between 2 processes of the same image. This is a problem because I try to find small volume changes between different images of a same patient.
Thanks in advance for your help,
Hugo
|