Dear FSL experts,
I am currently trying to register my find_the_biggest output (which is in diffusion space) to standard MNI152 space, however I keep running into some problems.
Prior to the transformation into standard space, my find_the_biggest output would show intensity values as integers (e.g., 1 ,2, 3 etc). However, after I ran flirt and fnirt to register it to standard space, my find_the_biggest output now shows intensity values of decimals (e.g., 1.455, 5.39 etc). I am curious as to why this is happening, and where in my steps I am going wrong. The steps I take are as follows:
1) Run flirt on nodif_brain and output a diff2standard.mat file
2) Run fnirt using the diff2standard.mat file from running flirt:
fnirt --ref=/MNI152_2mm --in=/ftb_output --aff=/diff2standard.mat --iout=/ftb_fnirt
Thank you for your help,
Ivy Cho
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