Working with outputs from a 3 class FAST segmentation (pveseg), I have noticed that the assignment of mask values is not consistently tied to tissue classes. Across 8 cases, I have observed the following patterns:
WM=2; GM=1; CSF=3 (5x)
WM=3; GM=1; CSF=2 (2x)
WM=3; GM=2; CSF=1 (1x)
How is the assignment of values to tissue classes determined by FAST? I looked at the probability plots of each class and that did not seem to explain the value assignments.
Many Thanks,
Jenifer
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