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Interindividual correspondances: two complementary strategies to integrate the sulcal information| old_uid | 10149 |
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| title | Interindividual correspondances: two complementary strategies to integrate the sulcal information |
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| start_date | 2011/09/09 |
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| schedule | 11h |
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| online | no |
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| location_info | Campus du CNRS, salle Georges Morin |
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| details | Invité par Sylvain Takerkart |
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| summary | Brain mapping group investigations require to define correspondances across subjects. The integration of the information from the sulci into the interindividual registration procedure is a tricky problem that can be addressed through different strategies. We present two separate methods that rely on distinct assumptions regarding variability and stability of the cortical folds between individuals: -We proposed in [1] a 3D geometric approach that consists in matching a series of cortical ribbons through diffeomorphic registration of their sulcal imprints. The DIffeomorphic Sulcal- based COrtical registration (DISCO) combines the benefits from two recent technical outcomes to achieve an automatic brain normalization guided by exhaustive sulcal landmarks.
-Finding interindividual cortical correspondances can also be treated as a 2D problem of surface parameterization. In this context, the idea of an intrinsic organization of the cortical surface around which variability occurs has arisen, and a model of such organization can be used to perform cortical localization and implicitly solve the problem of inter-subject cortical surface matching [2]. The method proposed in [3] defines a theoretically sound implementation of the cortical model presented in [2] by aligning sulcal landmarks onto specific axes of a rectangular domain instead of trying to match landmarks between subjects, with promising results.
[1] Auzias G, Colliot O, Glaunes JA, Perrot M, Mangin JF, Trouve A, Baillet S (2011) Diffeomorphic brain registration under exhaustive sulcal constraints. IEEE Trans Med Imaging 30(6):1214-27. Epub 2011 Jan 28.
[2] Clouchoux C, Rivière D, Mangin J-F, Operto G, Régis J, Coulon O (2010) Model-driven parameterization of the cortical surface for localization and inter-subject matching. NeuroImage 50: 552-566.
[3] Auzias G, Lefèvre J, Le Troter A, Fischer C, Perrot M, Régis J, Coulon O (2011 in press) Model- driven Harmonic Parameterization of the Cortical Surface. Proc of MICCAI 2011. |
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| responsibles | Riehle |
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