Online-only Table 3 All data types with associated identifiers, descriptions, and modalities.
Raw data | ||
|---|---|---|
Identifier (ext.) | Description | Modality |
_T1w (nii.gz) | T1-weighted scan | Anatomical MRI |
_bold (nii.gz) | Functional (BOLD) MRI scan | Functional MRI |
_magnitude1 (nii.gz) | Average magnitude image (across two echoes) of B0 fieldmap scan (PIOP2 only) | Fieldmap |
_phasediff (nii.gz) | Difference between two phase images of B0 fieldmap scan | Fieldmap |
_dwi (.nii.gz) | Diffusion-weighted scan | DWI |
_dwi (.bvec) | Diffusion gradient table (plain-text file) | DWI |
_dwi (.bval) | Diffusion b-value sequence (plain-text file) | DWI |
_physio (tsv.gz) | Physiology (cardiac/respiratory traces + volume onsets) | Physiology |
_events (tsv) | Onsets, durations, and other relevant properties of events during task fMRI | Behavior |
* (.json) | Metadata associated with a specific file, acquisition type, or file type | All modalities |
Derivatives | ||
Fmriprep derivatives | ||
Identifier (ext.) | Description | Modality |
_T1w (nii.gz) | Preprocessed T1-weighted scan | Functional MRI |
_mask (nii.gz) | Binary brain mask (0: not brain, 1: brain) | Functional/ |
anatomical/ | ||
diffusion MRI | ||
_dseg (nii.gz) | Discrete segmentation (0: background, 1: gray matter, 2: white matter, 3: cerebrospinal fluid) | Anatomical MRI |
_probseg (nii.gz) | Probabilistic segmentation (1st volume: gray matter, 2nd volume: white matter | |
.surf (.gii) | Reconstructed surfaces (e.g., inflated, midthickness, pial, and smoothwm) | Anatomical MRI |
_xfm (.h5) | Linear + non-linear transformation parameters between two spaces (orig, T1w, MNI152NLin2009cAsym, and fsaverage5) | Functional/ |
anatomical MRI | ||
_xfm (.txt) | Linear transformation parameters between two spaces (orig, T1w, MNI152NLin2009cAsym, and fsaverage5) | Functional/ |
anatomical MRI | ||
_bold (nii.gz) | Preprocessed BOLD-MRI scan | Functional MRI |
_boldref (nii.gz) | Reference volume used for computing transformation parameters | Functional MRI |
_regressors (tsv) | Table with confound regressors for BOLD-MRI data | Functional MRI |
* (.json) | Metadata from file with the same name (excluding extension) | All modalities |
DWI derivatives | ||
_dwi (.nii.gz) | Preprocessed diffusion-weighted scan | DWI |
_dwi (.bvec) | Preprocessed gradient table | DWI |
_dwi (.bval) | Preprocessed b-value sequence | DWI |
_mask (.nii.gz) | Binary brain mask (0: not brain, 1: brain) | DWI |
_diffmodel | Estimated parameters from the diffusion tensor model | DWI |
_EVECS | Eigenvectors from the diffusion tensor model | DWI |
_FA | Fractional anisotropy map | DWI |
VBM derivatives | ||
GMvolume | Estimated voxelwise gray matter volume map | Anatomical MRI |
Freesurfer morphological statistics derivatives | ||
_stats | Morphological statistics per anatomical region from a particular atlas | Anatomical MRI |
Physiology derivatives | ||
_regressors | Physiology-derived RETROICOR, HRV, and RVT regressors for BOLD-MRI data | Physiology |
