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The current versions of FS require an intensity normalization step be
run on 7T data prior to running it through FS. I have used SPM VBM for
this, but I think samseg should work too, eg,
samseg --i t1.mgz --o samseg
Then use samseg/mode01_bias_corrected.mgz as input to FS.
On 5/2/2023 10:28 AM, Jastrzebowska, Maya Anna wrote:
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Dear Doug,
I'm having the same issue as numerous others have described: a failure
to run the Intensity Normalization step of recon-all on a single
subject's skull-stripped T1-MP2RAGE 7T data, with the following error
displayed in the log file:
mri_normalize -g 1 -seed 1234 -mprage -noconform nu.mgz T1.mgz
[...]
3d normalization pass 1 of 2
error: MRInormFindControlPoints: could not find enough control points
error: MRInormFindControlPoints failed
I am attaching the log file here.
I am able to run recon-all without errors for other subjects with the
same sequence and preprocessing steps (removing MP2RAGE background
noise as suggested by Marques et al., bias correction and
skull-stripping).
Please let me know if a solution has been found for this issue. Thank
you in advance for your help!
Best,
Maya Jastrzebowska
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