Re: [Freesurfer] Inaccurate transformation

2013-02-02 Thread Shani Ben Amitay
Hi Doug I've tried it and the surface is still not aligned with the diffusion image. The visualization is done using FREEVIEW. Thanks again! Shani On Fri, Feb 1, 2013 at 9:19 PM, Douglas N Greve wrote: > Hi Shani, I don't know anything about that program and can't vouch for it > (which probably

Re: [Freesurfer] Inaccurate transformation

2013-02-01 Thread Douglas N Greve
Hi Shani, I don't know anything about that program and can't vouch for it (which probably means that I wrote it:). Anyway, the way that I would do it would be to compute a new matrix: K = M*inv(T)*R where R is the register.dat and T is the vox2tkrRAS and M is the vox2scannerRAS of the DTI. Thes

Re: [Freesurfer] Inaccurate transformation

2013-02-01 Thread Shani Ben Amitay
Hi Doug I'm sorry it's fs_read_regdat.m a matlab script I found in the mail archive which converts the register.dat file into ras2ras transformation matrix.I want to use thess surfaces to extract vector normals in the diffusion space. Hope it's clear now Thanks! Shani On Thu, Jan 31, 2013 at 10:3

Re: [Freesurfer] Inaccurate transformation

2013-01-31 Thread Douglas N Greve
Hi Shani, what is fs_read_dat.m? I've never seen it before. Why do you need to transform the surface? What are you using to create the display below (ie, command line)? doug On 01/31/2013 10:53 AM, Shani Ben Amitay wrote: > Dear freesurfers > I used bbregister to coregister diffusion images with