OpenBrain v1.0 OpenBrain v1.0 is a public ready release of brain extracted T1 weighted MRI images, SynthStrip derived brain masks, and automated whole brain segmentation labels. Release Contents Cases: 35,838 Source OpenNeuro datasets: 607 License: CC0 Artifacts per case: image.nii.gz : revised brain extracted T1w image brain mask.nii.gz : SynthStrip derived brain mask whole brain segmentation.nii.gz : automated whole brain segmentation label All released cases are derived from raw T1w images that were exactly matched to verified public OpenNeuro snapshots with CC0/public domain compatible license metadata. The segmentation labels are algorithmic labels, not manual ground truth. Layout QC Manifest Fields The QC manifest uses Q1 Q7 for the raw OpenBrain QC 7 values and r1 r7 for the corresponding source local percentile risk fields. Larger r k values indicate higher risk relative to cases from the same OpenNeuro source dataset; they are not calibrated probabilities of segmentation correctness. R is the aggregate QC 7 risk score, and tier is the confidence tier derived from the fixed release operating points. The public sample manifest under sample/sample manifest.csv follows the sam…
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