Hi,

I have registered a patient’s MRI over the ColinN27 with mri_cvs_register and now i need convert an electrode (or voxel) coordinate from the subject’s space to the N27 space. I found an old post in the mailing list, but it did not work for me. The coords.txt file is just one line containing 10 10 10.  What am i doing wrong?

Here are the commands i used and the results :

 atlas geometry = 256 , 256 , 256

 image geometry = 256 , 256 , 256

 vox 2 ras atlas = 

-1.000   0.000   0.000   127.000;

 0.000   0.000   1.000  -111.000;

 0.000  -1.000   0.000   147.000;

 0.000   0.000   0.000   1.000;

 ras 2 vox image = 

-1.000   0.000   0.000   128.000;

-0.000  -0.000  -1.000   138.000;

-0.000   1.000  -0.000   143.000;

 0.000   0.000   0.000   1.000;

 product = 

 1.000   0.000   0.000   1.000;

 0.000   1.000   0.000  -9.000;

 0.000   0.000   1.000   32.000;

 0.000   0.000   0.000   1.000;

 transform at origin

 1.000;

-9.000;

 32.000;

 1.000;

 invalid voxel count = 9071323

 saveTransform code

 writing transform size = 49918625

 writing morph to file fullCSVmorph.tm3d

> applyMorph --template /Volumes/Sector2/surfaces/TandonLang/TT_N27/mri/orig.mgz --transform fullCVSmorph.tm3d point_list coords.txt transformed_coords.txt linear

Template name:/Volumes/Sector2/surfaces/TandonLang/TT_N27/mri/orig.mgz

After loading template

Template name:/Volumes/Sector2/surfaces/TandonLang/TT_N27/mri/orig.mgz

After loading template

 extension = tm3d

 Exception caught while loading transform

VolumeMorph load - failed to open input stream

Thank you,

Cristian Donos, PhD 
Postdoctoral Research Fellow, Department of Neurosurgery               

6431 Fannin Street | Suite G.550D | Houston, Texas 77030

Phone: 979-633-9208
Email:  cristian.donos@uth.tmc.edu