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Hard to tell. What do you see when you look on the images at the scanner or in your PACS system? Have you tried MRIConvert (http://lcni.uoregon.edu/~jolinda/MRIConvert/) or mri_convert in freesurfer? Cheers, Andreas Von: Andreas Lidström <[log in to unmask]> Antworten an: FSL - FMRIB's Software Library <[log in to unmask]> Datum: Donnerstag, 24. April 2014 22:10 An: <[log in to unmask]> Betreff: Re: [FSL] Fieldmap question This is from a GE Discovery 3T scanner. I used dcm2nii to convert it into nifti and this produces 4 images like the one I attatched + 2 phase images that are allso "double" like this. 2014-04-24 20:26 GMT+02:00 Andreas Bartsch <[log in to unmask]>: > Hi, > > no this does not look right. > Which scanner are the data from and how did you convert the DICOMs into NIFTI? > Cheers, > Andreas > > Von: Andreas Lidström <[log in to unmask]> > Antworten an: FSL - FMRIB's Software Library <[log in to unmask]> > Datum: Donnerstag, 24. April 2014 17:31 > An: <[log in to unmask]> > Betreff: [FSL] Fieldmap question > > Hello, > > I have real and imaginary field maps with separate magnitude images, but all > of them are "double" (two brain stacked onto of each other) > > 1. Why is this? > > 2 Should I combine them somehow before continuing with BET and further field > map processing? > > cheers