Hello,
I manually checked the registration of my free surfer parcellations to the rsfMRI data after reg-feat2anat and aseg2feat.
Problem is that I had to scale (stretch) the functional to make a good fit in several cases. Is this recommended? How can I avoid this?
Thanks, S
On Feb 22, 2013, at 5:14 PM, Sudhin A. Shah wrote:
Hello,
I manually checked the registration of my free surfer parcellations to the rsfMRI data after reg-feat2anat and aseg2feat.
Problem is that I had to scale (stretch) the functional to make a good fit in several cases. Is this recommended? How can I avoid this?
Thanks, S _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
Sudhin,
As far as I know (doug greve may comment later) it should never be necessary to stretch or scale a functional to fit the structural. Intuitively this is the case because it is the same brain in both images, so only orientation should change, if even that if the subject remained motionless in the scanner and assuming the structure and functional were run in the same session.
Make certain that subject structural and functional data was not somehow mixed-up (trying to align one subject with another). Also, if Analyze formatted files were used in any step of the workflow, there is a good chance that left and right were reversed (although that would not entail scaling changes to an attempt to correct).
Nick
On Feb 22, 2013, at 5:14 PM, Sudhin A. Shah wrote:
Hello,
I manually checked the registration of my free surfer parcellations to the rsfMRI data after reg-feat2anat and aseg2feat.
Problem is that I had to scale (stretch) the functional to make a good fit in several cases. Is this recommended? How can I avoid this?
Thanks, S _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi! Thank you.
1) I am using structural w functional taken at same time AND other times (same subject). BUT, I find the stretching problem even when it's the same time...
2) How can I verify if the scans were flipped (left/right)?
Thank you, Sudhin
On Feb 24, 2013, at 10:53 AM, "Nick Schmansky" nicks@nmr.mgh.harvard.edu wrote:
Sudhin,
As far as I know (doug greve may comment later) it should never be necessary to stretch or scale a functional to fit the structural. Intuitively this is the case because it is the same brain in both images, so only orientation should change, if even that if the subject remained motionless in the scanner and assuming the structure and functional were run in the same session.
Make certain that subject structural and functional data was not somehow mixed-up (trying to align one subject with another). Also, if Analyze formatted files were used in any step of the workflow, there is a good chance that left and right were reversed (although that would not entail scaling changes to an attempt to correct).
Nick
On Feb 22, 2013, at 5:14 PM, Sudhin A. Shah wrote:
Hello,
I manually checked the registration of my free surfer parcellations to the rsfMRI data after reg-feat2anat and aseg2feat.
Problem is that I had to scale (stretch) the functional to make a good fit in several cases. Is this recommended? How can I avoid this?
Thanks, S _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
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Nick Schmansky -
Sudhin A. Shah