Hi,
I have run in to a problem where melodic is not resampling my images
correctly. I am melodic 3.10 in FSL 4.1.6 to analyse resting state fMRI
with original voxel size 3x3x3.75. One slight quirk of my set up is the
registration. The brains are from dementia patients and elderly
controls, so I have found the best registration results by using fnirt
to register structural MPRAGE images to MNI standard space (2mm brain),
then in the melodic setup to register the functional scans to the
fnirt'd structural scans with 12 DOF, then to standard space with 3 DOF.
I am going on to compare the output to 2x2x2mm network templates, so
require the output melodic_IC.nii file to be resampled to 2mm. The
setting on the registration tab of the melodic GUI works fine when I run
multi-tensor ICA, but when I run single tensor ICA the images refuse to
be resampled and the melodic_IC.nii file remains with voxel size
3x3x3.75. Below are some outputs from fslinfo.
I've run it twice and on different subject groups with the same result.
Am I missing something?
Kind regards,
Tim Rittman
Clinical Research Fellow
Department of Clinical Neuroscience
University of Cambridge
fslinfo for output of single tensor ICA:
data_type FLOAT32
dim1 64
dim2 64
dim3 32
dim4 41
datatype 16
pixdim1 3.0000000000
pixdim2 3.0000000000
pixdim3 3.7500000000
pixdim4 1.0000000000
cal_max 0.0000
cal_min 0.0000
file_type NIFTI-1+
fslinfo for output of multi tensor ICA (identical to the templates I am
using):
data_type FLOAT32
dim1 91
dim2 109
dim3 91
dim4 25
datatype 16
pixdim1 2.0000000000
pixdim2 2.0000000000
pixdim3 2.0000000000
pixdim4 1.0000000000
cal_max 0.0000
cal_min 0.0000
file_type NIFTI-1+
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