search

templateflow / tpl-MNI152NLin6Asym

FSL's modified version (Asymmetric) of the MNI ICBM 152 non-linear 6th Generation Symmetric Average Brain Stereotaxic Registration Model
4 stars 4 forks source link

High resolution for "low" resolution versions of the MNI152NLin6Asym template? #6

Open jalmar opened 3 years ago

jalmar commented 3 years ago

Some of the low resolutions versions of the MNI152NLin6Asym template are actually high resolution. Or am I misinterpreting the meaning of the "res-0X" part?

This can lead to unexpected results in software that uses template flow; e.g. in fmriprep, upsampling of resting-state fMRI scans to 0.5 mm isotropic resolution when an output of 3 mm isotropic resolution was expected.

pixdim1     0.500000    pixdim2     0.500000    pixdim3     0.500000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-03_T1w.nii.gz
pixdim1     0.700000    pixdim2     0.700000    pixdim3     0.700000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-04_T2w.nii.gz
pixdim1     0.700000    pixdim2     0.700000    pixdim3     0.700000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-04_T1w.nii.gz
pixdim1     0.700000    pixdim2     0.700000    pixdim3     0.700000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-04_desc-brain_T1w.nii.gz
pixdim1     0.700000    pixdim2     0.700000    pixdim3     0.700000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-04_desc-brain_mask.nii.gz
pixdim1     0.700000    pixdim2     0.700000    pixdim3     0.700000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-04_desc-brain_T2w.nii.gz
pixdim1     0.800000    pixdim2     0.800000    pixdim3     0.800000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-05_desc-brain_T1w.nii.gz
pixdim1     0.800000    pixdim2     0.800000    pixdim3     0.800000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-05_desc-brain_T2w.nii.gz
pixdim1     0.800000    pixdim2     0.800000    pixdim3     0.800000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-05_T2w.nii.gz
pixdim1     0.800000    pixdim2     0.800000    pixdim3     0.800000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-05_T1w.nii.gz
pixdim1     0.800000    pixdim2     0.800000    pixdim3     0.800000    pixdim4     1.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-05_desc-brain_mask.nii.gz
pixdim1     1.600000    pixdim2     1.600000    pixdim3     1.600000    pixdim4     0.000000        ./tpl-MNI152NLin6Asym/tpl-MNI152NLin6Asym_res-06_atlas-HCP_dseg.nii.gz
oesteban commented 3 years ago

Or am I misinterpreting the meaning of the "res-0X" part?

Yes, resolution is an index, and it is prescribed in the template_description.json file.