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if you are running a group concat ICA all datasets have to be in the same space (and as a result they will have corresponding voxel dimensions). Typically this is 3mm (or even 4mm) MNI152 space to speed up the ICA decomposition.

Maarten

On Wed, May 16, 2018 at 11:05 PM, Audrey Nath <[log in to unmask]> wrote:
Hi there

I'm trying to run MELODIC from the command line, and I get the following error any time it gets to a dataset with voxel size 3x3x3.75 (2 of the datasets) instead of 3x3x3.4 (the other 20 datasets): 
   Image Exception : #3 :: Attempted to add images/ROIs of different sizes
   An exception has been thrown
   Attempted to add images/ROIs of different sizes

Should I resample these 2 datasets (I guess in afni with 3dresample) to 3x3x3.4? Any other solutions?

Thanks!

Audrey



--
Maarten Mennes, Ph.D.
Senior Researcher
Donders Institute for Brain, Cognition and Behaviour
Radboud University Nijmegen
Nijmegen
The Netherlands

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