Hello,
FSLview can have problems correctly displaying the latter volumes of large NIFTI files. As a double check you can use fslsplit to split the 4D file into its 3D constituents - if the end volume of the “split” images matches the original input, then the 4D should be good to go..
Kind Regards
Matthew
> On 4 Apr 2017, at 17:50, tom parker <[log in to unmask]> wrote:
>
> Dear FSL experts,
>
> I am trying to merge the PET images of 200 old subjects into a 4D file to feed it into randomise and run some statistical analyses.
>
> However, when i use:
>
> fslmerge -t output.nii.gz subjects/*.nii.gz
>
> And then open in fslview the output.nii.gz 4D file, i see that the last subjects are not merged well, although i checked their images and they seem fine.
>
> Should I use a different command to merge the files?
> Or is there a limit to the number of files that can be merged together?
>
> Thank you so much!
>
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