[Freesurfer] Freesurfer: surf2vol?

2012-03-14 Thread Florsek

Dear all,

we have performed a cluster analysis in Qdec and found a significant
vertex-cluster after correction for multiple testing using the Monte
Carlo simulation. Our aim is to map the vertices to an atlas which is
different from that of Desikan. To do that we need the volume-based
information of the significant cluster. To transform the surface-based
information into volume-based information we need to conduct the
surf2volume-command, right?
What I don't understand is what the required flags such as --surfval
and --volreg need to contain. For example what is meant with source
of the surface values and format (surfval) or matrix that maps XYZ in
the reference anatomical to XYZ in the functional volume (volreg).
Where can I get these files? Do I have to run tkregister2 for each proband?

Thank you very much for your help in advance!

Best regards,

Florian


-- 
Florian Siedek
Doctoral Scientist

Institute of Human Genetics
Department of Genomics
Life   Brain Center
University of Bonn
Sigmund-Freud-Strasse 25
D-53127 Bonn
Germany

Email: flor...@gmail.com

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[Freesurfer] Freesurfer: surf2vol?

2012-03-10 Thread Florsek

Dear all,

we have performed a cluster analysis in Qdec and found a significant 
vertex-cluster after correction for multiple testing using the Monte 
Carlo simulation. Our aim is to map the vertices to an atlas which is 
different from that of Desikan. To do that we need the volume-based 
information of the significant cluster. To transform the surface-based 
information into volume-based information we need to conduct the 
surf2volume-command, right?
What I don't understand is what the required flags such as --surfval 
and --volreg need to contain. For example what is meant with source 
of the surface values and format (surfval) or matrix that maps XYZ in 
the reference anatomical to XYZ in the functional volume (volreg). 
Where can I get these files? Do I have to run tkregister2 for each proband?

Thank you very much for your help in advance!

Best regards,

Florian


-- 
Florian Siedek
Doctoral Scientist

Institute of Human Genetics
Department of Genomics
Life  Brain Center
University of Bonn
Sigmund-Freud-Strasse 25
D-53127 Bonn
Germany

Email: flor...@gmail.com
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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] Extraction of vertex identifiers from a significant cluster

2012-02-14 Thread Florsek

Dear all,

We have performed a cluster analysis in Qdec and found a significant 
vertex-cluster after correction for multiple testing using the Monte 
Carlo simulation. Now, we would like to extract the (unique) identifiers 
of all vertices that form the significant cluster. We then would like to 
look up the spatial information (x, y, z) of these vertices. Our final 
aim is to map the vertices to an atlas which is different from that of 
Desikan.

Is this a way suitable to achieve our aim?

Many thanks for your help in advance!

Best regards,

Florian



-- 
Florian Siedek
Doctoral Scientist

Institute of Human Genetics
Department of Genomics
Life  Brain Center
University of Bonn
Sigmund-Freud-Strasse 25
D-53127 Bonn
Germany

Email: flor...@gmail.com
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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.