Dear FSL list,
When I run FAST on my structural scans, and look at the gray matter
probability values for each voxel, I typically get small numbers of
"ties" in the probability values that I wouldn't have expected. I'm
sure it's not a problem, but I'd like to understand why this happens.
For example if I look at a small region, composed of 962 ~1mm^3 voxels
all with gray matter probabilities greater than .8, 3 probability
values are repeated twice: 0.899646 0.901879 0.869251. I'm surprised
the algorithm outputs ties at that degree of precision.
Sorry if this question doesn't make sense. I'd be happy to clarify further.
Best
Aaron
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