We are running a pilot, to try to analyze
their epileptic monitoring unit datasets using the Martinos
tools (FreeSurfer and MNE)
The analysis was on an fMRI nii file, which
I checked before running fsFast, and it was LSA.
I wouldn’t suspect anything is wrong unless
I knew how the results should look like
I'd need a lot
more details. Where they using FreeSurfer? Sometimes the data
will go through several conversions and formats before
analysis. If the orientation info was lost or changed, then
that could explain it
Thanks Doug!
Good to know that.
I realized I had a problem when I got
activation on the wrong side (right finger tapping shows
activation on the right hemisphere)
The analysis was done in another hospital
when I just helped them remotely. They told me that their
analysis software shows the activation is in the other
hemisphere.
Any idea why something like that can
happen?
Thanks,
Noam
The actual
orientation of the input should not matter as long as the
nominal orientation matches the true orientation -- FS
automatically handles the orientation correctly. When you
ask whether the output will be "in RAS", are you asking
whether the left side is truly the left (and right is
right)? If so, the answer is yes.
On 5/4/2020 12:50 PM, Peled, Noam
wrote:
Hello,
After running recon-all on a patient,
the resulting T1.mgz coordinates system turned to be LIA.
Can I guarantee the recon-all output will be in RAS?
I also would like to run FS-FAST on
this patient’s fMRI task dataset, which is in LSA.
Any recommendation what should I do to
make sure both are in the same coordinates system (I
preferred RAS)?
Thanks,
Noam
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