You can try converting it to a parcellation (mris_label2annot -- this would just be a single label parcellation), then use mri_aparc2aseg to convert the parcellation to a label. This should look better than using label2vol.

doug

On 4/23/11 11:07 PM, Prapti Gautam wrote:

Dear freesurfers,

I am trying to convert a surface label into a volume file so that it can subsequently be viewed as a 3-D model. To create the label I've followed the steps from http://www.ci.uchicago.edu/wiki/bin/view/HNL/EditROI and have thus edited my color table LUT file.

The command I am using for this is mri_label2volume:

mri_label2vol --label test.label --temp brainmask.mgz --reg mni152.register.dat --proj frac 0 1 .001 --subject one --hemi lh --o test.mgz

However, the resultant volume file from this command is splotchy and thus does not look ideal when viewed in tkmedit. Decreasing the delta to very small values had no effect in making the volume render better.

Is there another way to convert a surface label that has been hand drawn in tksurfer into a volume file that is anatomically correct?

Thanks very much for your help

Prapti

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