Abstract
Commonly-used tools for cortical reconstruction and parcellation, such as FreeSurfer, are central to brain surface analysis but require extensive computation times. This paper proposes SegRecon, a fast learning approach where an integrated end-to-end deep learning method does simultaneously reconstruct and segment cortical surfaces directly from an MRI volume, all in a single step. We train a volume-based neural network to predict, for each voxel, the signed distance to the white-to-grey-matter interface along with its corresponding spherical representation in the registered atlas space. The continuous representation of the spherical coordinates enables our approach to naturally extract an implicit isolevel surface for its reconstruction and obtain the parcel labels from the spherical atlas. We illustrate the advantages of our method with thorough experiments on the MindBoggle dataset. Our parcellation results show more than 4% improvements in average Dice accuracy with respect to FreeSurfer and a drastic speed-up from hours to seconds of computation.
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Gopinath, K., Desrosiers, C., Lombaert, H. (2021). SegRecon: Learning Joint Brain Surface Reconstruction and Segmentation from Images. In: de Bruijne, M., et al. Medical Image Computing and Computer Assisted Intervention – MICCAI 2021. MICCAI 2021. Lecture Notes in Computer Science(), vol 12907. Springer, Cham. https://doi.org/10.1007/978-3-030-87234-2_61
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DOI: https://doi.org/10.1007/978-3-030-87234-2_61
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