Hi there,
I'm trying to copy the dlpfc label I've made using mri_label2label , but keep getting the following error. I've tried putting in paths in the command line, but haven't been able to rectify the problem. I was wondering if this might be a permission issue with the freesurfer folders. Any help will be greatly appreciated.
I've pasted the error output below:
$ mri_label2label --srclabel lh.dlpfc.annot.label --srcsubject 40052_practice --trgsubject 40686_before --trglabel lh.dlpfc.annot.label --regmethod surface --hemi lh
srclabel = lh.dlpfc.annot.label srcsubject = 40052_practice trgsubject = 40686_before trglabel = lh.dlpfc.annot.label regmethod = surface
srchemi = lh trghemi = lh trgsurface = white srcsurfreg = sphere.reg trgsurfreg = sphere.reg usehash = 1 Use ProjAbs = 0, 0 Use ProjFrac = 0, 0
SUBJECTS_DIR is /media/storage2/proc/freesurfer/40_w2/40_w2_fs4/before/ FREESURFER_HOME is /usr/local/freesurfer_4.0.1 Loading source label. No such file or directory mri_label2label: could not open label file lh.dlpfc.annot.label Illegal seek ERROR reading lh.dlpfc.annot.label
Thanks,
Prapti
-----Original Message----- From: Nick Schmansky [mailto:nicks@nmr.mgh.harvard.edu] Sent: Friday, 6 February 2009 3:47 PM To: Prapti Gautam Cc: Freesurfer Mailing List Subject: Re: [Freesurfer] creating label for dlpfc
Prapti,
You can use mri_label2label to do that, something like:
mri_label2label --srclabel rh.your_dlpfc.label \ --srcsubject subject_you_drew_label_on \ --trgsubject the_other_subject \ --trglabel rh.your_dlpfc.label \ --regmethod surface \ --hemi rh
so you draw the label on one subject (saved as rh.your_dlpfc.label in this example), and you would do this mri_label2label command for each subject that doesnt have a label. this assumes you've run freesurfer recon-all -all for each subject already, so that each has the sphere.reg file (which is how it does the label mapping).
see also mri_label2label --help.
Nick
On Fri, 2009-02-06 at 15:14 +1100, Prapti Gautam wrote:
Dear all,
I am trying to measure the volume of the dorsolateral prefrontal cortex in a large group of subjects. I have created a new label that only includes the dlpfc for a subject but realised that the same label file cannot be used on another subject. Has anyone created a customised ROI for dlpfc to use in a group of large subjects or can point me in the right direction ? The only other option I know is to individually create a label file for each subject which would be very time consuming.
Thanking you in advance,
Prapti
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