But why do you need to have the same resolution as the original functional?
On 4/14/15 10:30 PM, Xiaomin Yue wrote:
yes, that's precisely what I want. the reason is the following. A
subject was scanned multiple times across days with slightly different
slice position for each time. What I need is to extract a peak
response when a stimuli was presented. In order to make the voxels
match from one scan to another, I thought that all scans have to be in
same space, so that the data extracted for a voxel from different
scans match. Could there be a better way to do this?
Thanks,
Xiaomin
------------------------------------------------------------------------
Date: Tue, 14 Apr 2015 21:08:15 -0400
From: gr...@nmr.mgh.harvard.edu
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] mri_vol2vol
So you want it to be in a volume with field of view 256mm in all three
dimensions, but the voxel size to be that of the functional data? It
is possible to do, but not easy to set up. Can you say why you would
want to do that?
On 4/14/15 8:20 PM, Xiaomin Yue wrote:
Thanks for your response. The command you gave will generate a
new function data with the spatial resolution of the anatomical
data, which in my case is much higher than those of functional
data. What i want is to generate a new functional data in the
anatomical space, with spatial resolution of the original function
data. Is it possible? I thought that --fstalres would give me a
choice to keep the spatial resolution of the original function data.
Xiaomin
------------------------------------------------------------------------
Date: Tue, 14 Apr 2015 18:22:00 -0400
From: gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
To: freesurfer@nmr.mgh.harvard.edu
<mailto:freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] mri_vol2vol
sorry, I don't understand. fstal would imply that you want
talairach space. If you want to map the functional into the
anatomical space, then
mri_vol2vol --mov res-001.nii --o res-001.t1.space.nii --reg
register.dof6.dat --fstarg
On 4/14/15 11:36 AM, Xiaomin Yue wrote:
Hi Doug,
I like to convert a native functional data into the anatomical
space using mri_vol2vol with --fstal, so that the resample
data has same spatial resolution as the original function
data. However, mri_vol2vol give a error: --fstal unknown. I
also tried using --fstalres as suggested in the help document,
with same error. I am using fs5.3. the command is:
mdi_vol2vol --mov res-001.nii --fstarg --fstal 1.5 --o
res-001.t1.space.nii --reg register.dof6.dat
Thanks,
Xiaomin
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