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Merge branch 'talks/bootcamp-day1-02' into talks/bootcamp-day1-02-patch
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docs/assets/fmriprep-bootcamp-geneva2024/day1-02-bids/index.html

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.remark-slide-content h3 { font-size: 1.2em; color: #324989; }
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.footnote {
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figure {
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template: newsection
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name: BIDS
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---
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# BIDS: Brain Imaging Data Structure
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]
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* BIDS is a directory structure, based on common practices
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* Builds on existing standards (NIfTI, JSON, TSV)
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---
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# BIDS: Brain Imaging Data Structure
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.left-column2.small[
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.pad-left[
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<i class="fa-solid fa-folder-open"></i> my_dataset/<br />
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.pad-left[<i class="fa-solid fa-file-lines"></i> README]<br />
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.pad-left[.pad-left[.pad-left[<i class="fa-solid fa-brain"></i> sub-11_T2w.nii.gz]]]<br />
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]
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]
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* Subject, session, imaging modality, etc.
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* Generally just enough to assign unique names]]
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]]
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---
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name: newsection
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layout: true
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# Converting from DICOM into BIDS
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.perma-sidebar[
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<p class="rotate">
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<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0; height: 20px; padding-top: 6px;" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a>
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<span style="padding-left: 10px; font-weight: 600;">Day 1 :: Brain Imaging Data Structure</span>
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</p>
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]
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---
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# Converting from DICOM into BIDS
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---
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template: newsection
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layout: true
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name: Derivatives
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# BIDS Derivatives
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---
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BIDS Derivatives generally mirror the raw dataset.
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.small[
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.pad-left[
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<i class="fa-solid fa-folder-open"></i> fmriprep/<br />
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.pad-left[<i class="fa-solid fa-file-lines"></i> README]<br />
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.pad-left[<i class="fa-solid fa-circle-info"></i> dataset_description.json]<br />
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.pad-left[.pad-left[.pad-left[<i class="fa-blank fa-brain"></i> ...]]]<br />
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.pad-left[.pad-left[.pad-left[<i class="fa-solid fa-brain"></i> sub-11_task-mixed_from-orig_to-boldref_mode-image_desc-hmc_xfm.txt]]]<br />
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.pad-left[.pad-left[.pad-left[<i class="fa-solid fa-brain"></i> sub-11_task-mixed_space-MNI152NLin2009cAsym_desc-preproc_bold.nii.gz]]]<br />
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.pad-left[.pad-left[.pad-left[<i class="fa-blank fa-brain"></i> ...]]]<br />
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]
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]
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--
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New file suffixes, extensions and entities are possible.
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---
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template: newsection
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layout: true
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name: PyBIDS
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.install-cmd[
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```Bash
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pip install pybids
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```
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]
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---
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# PyBIDS
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A common specification of neuroimaging datasets affords queries for and
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adaptation to the available data.
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[PyBIDS](https://github.com/bids-standard/pybids/) is a Python library for
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querying and manipulating BIDS datasets.
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```Python
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>>> from bids import BIDSLayout
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>>> layout = BIDSLayout('/my_dataset')
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>>> bold = layout.get(subject='11', task='rest', suffix='bold', extension='.nii.gz')
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>>> bold
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[<BIDSImageFile filename='/my_dataset/sub-11/func/sub-11_task-rest_bold.nii.gz'>]
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>>> md = bold[0].get_metadata()
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>>> md['RepetitionTime']
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1.5
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{'datatype': 'func',
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'extension': '.nii.gz',
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'subject': '11',
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'suffix': 'bold',
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'task': 'rest'}
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```
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---
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# PyBIDS - Derivatives
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PyBIDS layouts support BIDS derivatives:
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```Python
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>>> fmri_derivs = BIDSLayout('/my_dataset-fmriprep', config=['bids', 'derivatives'], validate=False)
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>>> spaces = fmri_derivs.get_spaces(desc='preproc', suffix='bold')
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>>> spaces
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['MNI152NLin2009cAsym']
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```
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--
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It is also possible to provide your own config:
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```Python
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>>> import niworkflows
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>>> nipreps_config = niworkflows.data.load('nipreps.json')
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>>> fmri_derivs = BIDSLayout('/my_dataset-fmriprep, config=[nipreps_config], validate=False)
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```
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---
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template: newsection
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## Conclusion
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# Conclusion
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