Dear prof. Bruce

Thanks once again. As you clarify that each brain has different number of vertices. But still I want to ask the followings:

1) How to map these on some standard template say Freesurfer template and then retrieve cortical thickness for each vertices?

2) How to identify the location of each retrieved cortical vertices?

Kindly guide me for the same. I'll be highly thankful to you.

On Wed, Nov 21, 2012 at 8:19 PM, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:
yes, each brain has a different number, sufficient to get about 1mm isotropic resolution. You can use our spherical averaging to map them to a common coordinate system with the same # of vertices if you want (I think mri_surf2surf will do this)

cheers
Bruce

On Wed, 21 Nov 2012, Bharti Rana wrote:


I am Bharti, a M.Tech./Ph.D student at School of Computer & Systems
Sciences, Jawaharlal Nehru University, New Delhi, India. My area of interest
is pattern recognition and image processing. In one of my research work, i
used freely available freesurfer software to find cortical thickness using
recon-all -all command.

But, while retrieving cortcal thickness maps using read_curv() function, i
am getting different number of vertices for different brains. Are different
number of cortical vertices possible for two different brains? I have gone
through FAQ provided by Freesurfer but i did not find any related answer.

Kindly clarify.

Thanks in advance.


 

 

 

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Best Regards
Bharti
M.Tech./Ph.D.
School of Computer & Systems Sciences
Jawaharlal Nehru University
NEW DELHI, INDIA




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Best Regards
Bharti
M.Tech./Ph.D.
SC&SS
JNU, NEW DELHI