Hello Freesurfers-

I wondered what the word was on preprocessing before you get into the
land of freesurfer and recon-all.

I have some Inversion Recovery-T1s, where bias / field inhomogeneity
is a slight issue. The standard N3ing that is done autorecon1 really
wasn't cutting it (it was fine, but it required additional time in the
back end, e.g., correcting skull-strips, adding control points).  And
for all non-freesurfing, I have been using either: 1) a combo of N3
and MFAST (b/c we have T2 where the same bias isn't present) or 2) a
tweaked MFAST routine.

I however didn't want to "over-correct" my data, so I wanted to get
some feedback before I go down either rabbit-hole. Anyone have some
feedback / past experiences?

Pics from both routines are at:
http://brainimaging.waisman.wisc.edu/~hanson/freesurf1/

Prefix of n3mfast- Combo of N3 and MFAST
Prefix of superrestore- Tweaked MFAST routine

The superrestores looked cleaner, but I was worried it might be "too
much" preprocessing.

Thoughts? Thanks much,
jamie.



-- 
Jamie L. Hanson
Waisman Laboratory for Brain Imaging & Behavior | Child Emotion Research Lab
University of Wisconsin - Madison
1500 Highland Avenue
Madison, WI 53706
Phone: (608) 262-5148
***Please note my new email: [EMAIL PROTECTED]
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