Diffusion Atlas

Diffusion Atlas - re-release of the Khan et al. (2019) fetal diffusion atlas (reference below) with added tissue segmentations and regional parcellations for gestational age (GA) weeks 22 through 35. This dataset contains the following files: dwi_GA*_cfa.nii.gz - Color fractional anisotropy dwi_GA*_fa.nii.gz - Fractional anisotropy dwi_GA*_mask.nii.gz - Binary brain mask dwi_GA*_md.nii.gz - Mean diffusivity dwi_GA*_tensor.nii.gz - Diffusion tensor dwi_GA*_tissue.nii.gz - Segmentation based on tissue class with white/gray matter border delineated dwi_GA*_regional.nii.gz - Regional parcellation DWIAtlas_labelkey.txt has a segmentation label key, loadable in ITK-SNAP Files in this data release were developed for research purposes and are not intended for medical or diagnostic use and have no warranty. The authors and distributors do not make any guarantees regarding the accuracy or usefulness of results generated from these tools or their derivatives and are not liable for any damages resulting from their use. Please reference this work if it is helpful for a publication: Bagheri, M., Velasco-Annis, C., Wang, J., Faghihpirayesh, R., Khan, S., Calixto, C., Jaimes, C., Vasung, L., Ouaalam, A., Afacan, O. and Warfield, S.K., 2025. An MRI Atlas of the Human Fetal Brain: Reference and Segmentation Tools for Fetal Brain MRI Analysis. arXiv preprint arXiv:2508.15034. Khan, S., Vasung, L., Marami, B., Rollins, C.K., Afacan, O., Ortinau, C.M., Yang, E., Warfield, S.K. and Gholipour, A., 2019. Fetal brain growth portrayed by a spatiotemporal diffusion tensor MRI atlas computed from in utero images. Neuroimage, 185, pp.593-608. Khan, S., Rollins, C.K., Ortinau, C.M., Afacan, O., Warfield, S.K. and Gholipour, A., 2018. Tract-specific group analysis in fetal cohorts using in utero diffusion tensor imaging. In Medical Image Computing and Computer Assisted Intervention–MICCAI 2018: 21st International Conference, Granada, Spain, September 16-20, 2018, Proceedings, Part III 11 (pp. 28-35). Springer International Publishing