Dear FSL-experts,
I try to make fieldmap images for FEAT but am not quite sure about the Processing Steps:
My datatype info is:
> fslinfo FM_BeutleCa.nii
.gz
data_type INT16
dim1 64
dim2 64
dim3 36
dim4 1
datatype 4
pixdim1 3.0000000000
pixdim2 3.0000000000
pixdim3 3.7499995232
pixdim4 0.4000000060
cal_max 0.0000
cal_min 0.0000
file_type NIFTI-1+
I read, that INT16 is a float field map (scaled unwrapped phase difference img) and it is unmasked as a physician told me.
So do I continue with the steps 1b, 1c, 4b and 5? (for a single, real fieldmap?) or are there any other steps beforehand?
ad Step 1b: Can I use the T1 structural scan as magnitude image? (undistorted and registered) - and if yes:
do I take the BET-image?
My BET-T1 is also having different dim and pixdim / resolution - so what to do?
data_type
dim1 176
dim2 256
dim3 166
dim4 1
datatype 4
pixdim1 1.0000000000
pixdim2 1.0000000000
pixdim3 1.0000000000
pixdim4 0.0000000000
cal_max 93.0000
cal_min 0.0000
glmax 93
glmin 0
origin1 0
origin2 0
origin3 0
file_type ANALYZE-7.5
I would be really grateful for your help, thank you very much in advance, Daniela
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