The UltraCortex repository (https://www.ultracortex.org) houses magnetic resonance imaging data of the human brain obtained at an ultra-high field strength of 9.4 T. It contains 86 structural MR images with spatial resolutions ranging from 0.6 to 0.8 mm. Additionally, the repository includes segmentations of 12 brains into gray and white matter compartments. These segmentations have been independently validated by two expert neuroradiologists, thus establishing them as a reliable gold standard. This resource provides researchers with access to high-quality brain imaging data and validated segmentations, facilitating neuroimaging studies and advancing our understanding of brain structure and function. Existing repositories do not accommodate field strengths beyond 7 T, nor do they offer validated segmentations, underscoring the significance of this new resource.
@article{arxiv.2406.18571,
title = {UltraCortex: Submillimeter Ultra-High Field 9.4 T Brain MR Image Collection and Manual Cortical Segmentations},
author = {Lucas Mahler and Julius Steiglechner and Benjamin Bender and Tobias Lindig and Dana Ramadan and Jonas Bause and Florian Birk and Rahel Heule and Edyta Charyasz and Michael Erb and Vinod Jangir Kumar and Gisela E Hagberg and Pascal Martin and Gabriele Lohmann and Klaus Scheffler},
journal= {arXiv preprint arXiv:2406.18571},
year = {2025}
}