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Hi, Can you upload your original input file to https://oxfile.ox.ac.uk/oxfile/work/extBox?id=700839B35190E48BF so we can have a look at it? Also can you let me know the exact fslroi command line call? Kind Regards Matthew -------------------------------- Dr Matthew Webster FMRIB Centre John Radcliffe Hospital University of Oxford -------------------------------- Dr Matthew Webster FMRIB Centre John Radcliffe Hospital University of Oxford On 5 Jan 2019, at 20:48, Chris Watson <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi, I have some Philips 3T (Intera) diffusion images for which I am using "fslroi" to get the b0 image. I see different behavior in FSL6 compared to FSL5.0.9: 1) the output datatype is different. The DWI volume is INT16, and "fslroi" returns INT16 (FSL6) or FLOAT32 (FSL5). 2) the voxel value ranges are drastically different: $ fslstats dwi_orig -r 0.000000 65674.257812 $ fslstats b0_fsl6 -r -28676.478516 28226.824219 $ fslstats b0_fsl5 -r 0.000000 173521.359375 I did the same thing, extracting the first volume of a 4D resting-state fMRI series, but the output was (nearly) identical. I can't figure out what the issue is. This is on CentOS 7.4.1708; GCC 5.4.0; openblas 0.3.4 I am happy to provide any other information. Chris ________________________________ To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1 ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1