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Hi Sara,

The dimension of the resampled image will be the same as the reference image. However, having 1225 direction is odd!

You may want to look into mrresize from MRTRIX package. Are you using the mask option in your eddy command?

Mahmoud


On Wed, Jun 19, 2019 at 2:45 PM [log in to unmask] <[log in to unmask]> wrote:
Hi FSL team,

I am using eddy_cuda to preprocess my DTI image (32 directions and 3 b0 volumes). Since my computer has limited memory, I cannot preprocess images with a high dimension of 256*256*74*35. I tried to downsample them using a reference image using this command:

flirt -in DTI.nii.gz -ref reference_DTI.nii.gz -o DTI_resampled.nii.gz -applyxfm


Now that I use fslinfo to look at the DTI_resampled.nii.gz, the dimensions are 100*100*74*1225.


How can I ensure that I have 35 volumes rather than 1225.


Thanks,

Sara



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