Good morning,
I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject?
Thank you, Heather
Hi Heather
the anterior/posterior length of each tract you mean? Or the length of the entire hemi? Bruce On Wed, 16 Mar 2016, Heather Acuff wrote:
Good morning,
I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject?
Thank you, Heather
Hi Bruce,
I'm asking for the length of the entire hemisphere.
Thank you! Heather
On Wed, Mar 16, 2016 at 11:19 AM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:
Hi Heather
the anterior/posterior length of each tract you mean? Or the length of the entire hemi? Bruce
On Wed, 16 Mar 2016, Heather Acuff wrote:
Good morning,
I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject?
Thank you, Heather
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I see. I don't think we generate that by default. If you have a bunch of subjects I guess you could great a single vertex label at the frontal pole and another at occipital pole on fsaverage, then map each of them to each subjects and compute the distance between them. That will be a rough estimate. Or you could transform the brainmask.mgz to tal coords and see what the first and last a/p coords are. Neither will be perfect
On Wed, 16 Mar 2016, Heather Acuff wrote:
Hi Bruce, I'm asking for the length of the entire hemisphere.
Thank you! Heather
On Wed, Mar 16, 2016 at 11:19 AM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote: Hi Heather
the anterior/posterior length of each tract you mean? Or the length of the entire hemi? Bruce On Wed, 16 Mar 2016, Heather Acuff wrote: Good morning, I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject? Thank you, Heather
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.
Thank you very much! Heather
On Wed, Mar 16, 2016 at 11:24 AM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:
I see. I don't think we generate that by default. If you have a bunch of subjects I guess you could great a single vertex label at the frontal pole and another at occipital pole on fsaverage, then map each of them to each subjects and compute the distance between them. That will be a rough estimate. Or you could transform the brainmask.mgz to tal coords and see what the first and last a/p coords are. Neither will be perfect
On Wed, 16 Mar 2016, Heather Acuff wrote:
Hi Bruce,
I'm asking for the length of the entire hemisphere.
Thank you! Heather
On Wed, Mar 16, 2016 at 11:19 AM, Bruce Fischl < fischl@nmr.mgh.harvard.edu> wrote: Hi Heather
the anterior/posterior length of each tract you mean? Or the length of the entire hemi? Bruce On Wed, 16 Mar 2016, Heather Acuff wrote: Good morning, I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject? Thank you, Heather
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
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.
p.s. or you can measure the distance in a sagittal plane using the measure tool in freeview (which Ruopeng just reminded me about)
On Wed, 16 Mar 2016, Heather Acuff wrote:
Good morning,
I apologize if this email was sent out twice. I would like to use anterior to posterior length as a covariate in my DTI analysis. Is there an easy way to obtain this information for each subject?
Thank you, Heather
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
Heather Acuff