Hi Antonin,
we start slightly inside as surfaces expand more easily than shrink. This way
even for the further atrophied time points there is a higher chance that it
will be slightly inside it’s final position.
The mris_longitudinal_surfaces is over 11 years old and was used for testing
Hi Antonin
in the case of severe atrophy or a long period between scans the pial
surface from time 1 may be far enough outside the pial surface of time 2
that the deformation cannot recover it. We have found that starting it a
bit inside makes it more robust.
As for the
Dear Martin,
thank you for the explanations, and sorry, I missed your previous response.
Just I am wondering, what is the reason of the shrinkage? Why not to start
directly from pial surface of the base?
And, I also found a binary mris_longitudinal_surfaces, which is, however, not
used in
Hi Antonin,
max does not constrain thickness. The location of the max is constrained to be
within 2*max for every iteration, so it will constrain how far outwards it
searches. But it will be done at each scale, so it can still deform a long way.
We initialize the surface processing in long
Dear experts,
I am trying to understand how the pial and white surfaces are generated in
longitudinal stream using information from the reconstructed base template
(freeSurfer development version).
In longitudinal stream, apart from the -orig, -orig_pial and -orig_white there
are also
