The native resolution of the other subjects is (1,1,1)mm voxel size and (256,256,160) voxels, whereas this subject is (0.7,0.7,0.8) mm voxel size and (288,288,165) voxels. Sorry that wasn't clear in my previous email. I'd appreciate any insight that anyone might be able to share.
Thanks,
Tricia
--- On Wed, 3/9/11, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:
From: Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] Small voxel size
To: "Tricia Merkley" <tmerkle22@yahoo.com>
Cc: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Date: Wednesday, March 9, 2011, 5:01 PM
What is the resolution of your other
subjects?
Hello,
One of our subjects was scanned with (0.7,0.7,0.8) mm voxel size, although all other acquisition parameters were the same as the other subjects. I'm wondering to what extent this might affect the results of the subcortical segmentation, cortical thickness measurements, etc., as compared to 1mm cubic voxels. When would it be appropriate to use the '-cm' flag for
mri_convert?
Thanks,
Tricia Merkley
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