Thanks Dan.

It is already installed with Freesurfer as you say:

[jdrozd@trumpet bin]$ pwd /trumpet/downloads/FreeSurfer/freesurfer/bin [jdrozd@trumpet bin]$ ./grad_unwarp

USAGE: grad_unwarp

-i infile : dcmdir or dcmfile or mghfile -s seriesno : dicom series - needed only if invoking -i dcmdir -unwarp <type> : gradient unwarping : Optional type is the gradient unwarping displacements : map to use - supply either scanner gradient model (sonata, : allegra, brm, crm) or map filename. (BRM is GE like : UCSD's 1.5T; CRM is GE like MGH Bay 1, BWH-GE, Duke-GE.) : If unwarping an mgh volume, user _must_ supply a type. -nojac : don't do jacobian correction when unwarping -corfov : resample to cor FOV (bug: recenters volume on (0,0,0)) -cor : save as COR format instead of mgh (you should use -corfov as well) -interp : method (<cubic>,linear,nearest,spline) -o outfile : MGH formatted by default (unless -cor is specified) -matlab matlab_binary : default is /space/lyon/6/pubsw/common/matlab/6.5/bin/matlab : grad_unwarp needs at least version 6.5 to handle the long. : filenames. And this installation has crucial dicom patches. -version : print version string -help : print help text

On 12/20/12, dgw dgwakeman@gmail.com wrote:

Is it not included in your freesurfer installation?

To check: After sourcing Freesurfer type

which grad_unwarp

HTH Dan

On Thu, Dec 20, 2012 at 9:42 AM, John Drozd john.drozd@gmail.com wrote:

...

Hello,

I would like to download and install the software described at

http://surfer.nmr.mgh.harvard.edu/fswiki/GradientUnwarping

Your email address is listed on this website.

I cannot find a download link.

We would like to use this with Freesurfer.

Do you know where I can download this software from?

Thank you,

John

John J. Drozd, M.Sc., Ph.D. Post-Doctoral Fellow Robarts Research Institute Western University London, Ontario, Canada

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