[Freesurfer] automatic reconstruction of abnormal brains
Hi all, I am starting a project analyzing patients with cranial deformities. How robust is the automatic cortical reconstruction process - i.e., would it be able to handle deformed skulls? Similar to this picture: http://upload.wikimedia.org/wikipedia/commons/1/1f/Single_suture_synostosis.png I am also wondering about the possibility of getting information about the intermediate steps of the local gyrification calculation. Like, could we get information on the pial and outer pial surface paths on each individual slice, before that information is turned into a 3D surface? Thanks for your help! ~ Maria ___ 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.
Re: [Freesurfer] LGI analysis of single subject
Hi Marie - Thanks for your response. After sending my email I found the hemisphere average values, but the values at each vertex and in each ROI will be very helpful! I tried the command you provided in tkmedit and it looks perfect - thanks! But when I try what I think is the corresponding command in freeview: freeview -v SUBJ/mri/brainmask.mgz SUBJ/mri/T1.mgz -f SUBJ/surf/lh.pial-outer-smoothed the images don't align (see attached). Am I doing something wrong? ~ Maria ___ 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] GI analysis of single subject
Hi all, I'm trying to get gyrification information about a single subject. I've run the -localGI process but I have a few questions about the results: 1. When I try to plot the smoothed out pial surface over the brainmask in freeview, I use the command freeview -v subject/mri/brainmask.mgz -f subject/surf/lh.pial-outer-smoothed but it appears to be an inflated surface of some sort. It doesn't hug the contours of the brain mask as I expected (or as shown in the top image here: https://surfer.nmr.mgh.harvard.edu/fswiki/LGI). How can I see that surface? 2. I see very little variation in the local GI. I'm wondering if the third image in the link above is typical, and also how to get the blue to red color scale as shown? I can only get red to yellow, which doesn't show as much variation. 3. There is information on how to run analysis on a group of subjects, but I'm wondering if it's possible to get numerical data on a single subject. For instance: average GI in a given ROI, global GI, distribution (min, max, std dev, etc.). If nothing else, can I get the numerical values for each vertex? Thanks for your help! ~ Maria Holland Stanford University ___ 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.
