Hi Bruce,

Thank you very much for your kind reply. We have dozens of ROIs and hundreds of individuals, we need to draw the mask for each individual. May I know If I could do it in command lines? If it is applicable, which commands/functions should I refer to?

In addition, whether it is possible to use the index (16k+ for each surface) of this peak vertex in a annotation file to draw the mask? I am not clear how the index of each vertex ranked in a surface, could I found the index-vector of all the vertices in the circle mask centred the peak vertex? If circle is not applicable, how about square?

Best regards,

Lizhi

On Wed, 5 Jun 2019 at 11:51, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:

Hi Lizhi

the easiest way to approximate this is to generate a label that is just
the peak vertex, then use the label editing tools in the current dev
version of freeview to dilate it 4-5 times.

cheers
Bruce

On Wed, 5 Jun 2019, Zhi Li
wrote:

>
> External Email - Use Caution
>
> Dear Freesurfer experts,
>
> Now I would like to find the peak vertex showed significant group effect in a given ROI (e.g. left
> insula), then draw a 5-mm-radius circle mask centred this peak point. May I know whether it is
> applicable and how should I do it with command line? Any suggestions would be much appreciated.
>
> Best regards,
>
> Lizhi
>
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