Open collections of brain MRI, CT and angiography for teaching and research. Each one lists what is inside, its licence, the credit to give, a link to view scans in the browser where the host offers one, and where to download or apply.
OpenNeuro ds000224 · Washington University in St. Louis
Ten healthy adults, each scanned many times. Repeat structural scans plus time-of-flight MR angiograms and MR venograms of the same people.
Credit Gordon EM et al., Neuron 2017. OpenNeuro ds000224, CC0.
OpenNeuro ds000221 · Max Planck Institute, Leipzig
Healthy younger and older adults with quantitative T1 (MP2RAGE), T2, 64-direction diffusion and resting-state fMRI.
Credit Babayan A et al., Sci Data 2019. OpenNeuro ds000221, CC0.
OpenNeuro ds003097, ds002785, ds002790 · University of Amsterdam
Three sets of healthy young adults (ID1000, PIOP1, PIOP2) with T1, diffusion and fMRI, plus demographics and psychometrics.
Credit Snoek L et al., Sci Data 2021. OpenNeuro ds003097 / ds002785 / ds002790, CC0.
OpenNeuro ds003563 · Otto von Guericke University, Magdeburg
One healthy man scanned many times at 7 tesla: T1 at 250 micrometres from averaged runs, with high-resolution TOF angiography, T2, susceptibility and diffusion.
Credit Luesebrink F et al., Sci Data 2017 and 2021. OpenNeuro ds003563, CC0.
brain-development.org · Imperial College London and three London hospitals
Nearly 600 healthy adults aged 20 to 86, scanned at three sites on 1.5 T and 3 T scanners. Good for age and scanner variety.
Credit IXI dataset, brain-development.org, CC BY-SA 3.0. Work built from it must carry the same licence.
mindboggle.info · Mindboggle team
101 healthy brains with the cortex labelled by hand by experts (DKT protocol): the reference standard for checking cortical labels.
Credit Klein A, Tourville J. Front Neurosci 2012;6:171. CC BY 4.0.
OpenNeuro ds004889 · South Carolina stroke cohort
Clinical MRI from people with acute stroke, fully anonymised, with demographics and impairment scores. Sequences vary between patients, as in real practice.
Credit Stroke Outcome Optimization Project, OpenNeuro ds004889 (doi:10.18112/openneuro.ds004889.v1.1.2), CC0.
OpenNeuro ds004884 · University of South Carolina
People with chronic stroke and speech or language impairment, many scanned at several sessions, so recovery can be followed over time.
Credit Gibson M et al., Sci Data 2024;11:981. OpenNeuro ds004884, CC0.
Zenodo · University of Turin (DeepHealth)
CT perfusion from people with suspected acute stroke, 100 training and 15 test cases, on a 64-slice scanner.
Credit Gava U et al., UniToBrain, doi:10.5281/zenodo.5109415, CC BY 4.0.
OpenNeuro ds000030 · UCLA
Healthy controls alongside people with schizophrenia, bipolar disorder and ADHD, with structural, diffusion and functional MRI.
Credit Poldrack RA et al., Sci Data 2016. OpenNeuro ds000030, CC0.
OpenNeuro ds003949 · Lausanne University Hospital (CHUV)
Time-of-flight MR angiograms from healthy controls and people with intracranial aneurysms, with manual aneurysm masks.
Credit Di Noto T et al., Neuroinformatics 2022. OpenNeuro ds003949, CC0.
Zenodo · three clinical centres
CT angiography studies with expert-annotated aneurysms and aneurysm-free controls, including many small, hard-to-see aneurysms.
Credit Blagosklonova E et al., doi:10.5281/zenodo.15697196, CC BY 4.0.
Zenodo · University Hospital Zurich
Paired CT angiography and TOF-MRA from the same patients, with voxel labels for more than 40 named arteries and veins.
Credit TopBrain Challenge, University Hospital Zurich, doi:10.5281/zenodo.21972006. Commercial use needs the data owner’s permission.
Zenodo · University Hospital Zurich
Paired CTA and TOF-MRA with Circle of Willis labels from the TopCoW challenge, plus four external test sets labelled the same way.
Credit TopCoW Challenge, doi:10.5281/zenodo.15692630. Commercial use needs permission; the ISLES 2024 CTA subset is CC BY-NC.
Zenodo · DSA-sequence Intracranial Artery Segmentation
Digital subtraction angiography runs from intracranial interventions, with expert labels of the intracranial arteries across the sequence.
Credit Liu W et al., Med Image Anal 2024, doi:10.1016/j.media.2024.103247. Data doi:10.5281/zenodo.11637181, CC BY 4.0.
Hugging Face (CADS release) · Istanbul Medipol University
Non-contrast head CT from adults at 1 mm slices, one scanner and one protocol. No labels. Part of the CADS release, which needs a free Hugging Face login and accepting its terms.
Credit BrainCT-1mm, Istanbul Medipol University, released in CADS (Xu et al., arXiv:2507.22953), CC BY 4.0.
McConnell Brain Imaging Centre, McGill University
The standard average adult brain, built from 152 people, with T1, T2 and PD templates, tissue maps and brain masks.
Credit Fonov VS et al., NeuroImage 2011. Keep the McGill copyright notice with every copy.
McConnell Brain Imaging Centre, McGill University
One man scanned 27 times and averaged: a sharp single-subject T1 brain, long used as a reference.
Credit Holmes CJ et al., J Comput Assist Tomogr 1998;22:324. Keep the McGill copyright notice.
brain.labsolver.org · Fang-Cheng Yeh, University of Pittsburgh
White-matter tract atlas averaged from 1,065 young adults of the Human Connectome Project: tract volumes, streamlines and connectome tables.
Credit Yeh FC, Nat Commun 2022;13:4933, CC BY-SA 4.0, plus the WU-Minn HCP data acknowledgment.
Alzheimer’s Disease Neuroimaging Initiative · LONI, USC
Long-running study of normal ageing, mild cognitive impairment and Alzheimer’s disease, with MRI, PET and biomarkers. Access after an online application; the agreement is renewed each year.
Credit As set out in the ADNI data use agreement and publication policy.
Open Access Series of Imaging Studies · Washington University in St. Louis
Older adults with and without dementia. OASIS-2: 150 people, 373 MRI sessions. OASIS-3: 1,378 people with MRI and PET. Non-commercial academic research only.
Credit Marcus DS et al., J Cogn Neurosci 2010 (OASIS-2); LaMontagne PJ et al., medRxiv 2019 (OASIS-3).
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Licences and counts were checked on each source page in November 2026. Terms can change: read the source’s licence before you download, and give the credit it asks for. “View online” opens one example scan in the host’s own browser viewer. We are not affiliated with these collections; names belong to their owners.
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