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239 results on '"Malandain, G."'

19. Retrospective evaluation of intersubject brain registration

Author

Hellier, P., Barillot, C., Corouge, I., Gibaud, B., Le Goualher, G., Collins, D.L., Evans, A., Malandain, G., Ayache, N., Christensen, G.E., and Johnson, H.J.

Subjects
Neuroanatomy -- Research, Business, Electronics, Electronics and electrical industries, Health care industry
Abstract

Although numerous methods to register brains of different individuals have been proposed, no work has been done, as far as we know, to evaluate and objectively compare the performances of different nonrigid (or elastic) registration methods on the same database of subjects. In this paper, we propose an evaluation framework, based on global and local measures of the relevance of the registration. We have chosen to focus more particularly on the matching of cortical areas, since intersubject registration methods are dedicated to anatomical and functional normalization, and also because other groups [7] have shown the relevance of such registration methods for deep brain structures. Experiments were conducted using 6 methods on a database of 18 subjects. The global measures used show that the quality of the registration is directly related to the transformation's degrees of freedom. More surprisingly, local measures based on the matching of cortical suici did not show significant differences between rigid and non rigid methods. Index Terms--Atlas matching, cortical suici, evaluation, MRI, neuroanatomy, nonrigid registration.

Published
2003

30. Planar cell polarity genes frizzled4 and frizzled6 exert patterning influence on arterial vessel morphogenesis

Author

MARKOVIC, R., PELTAN, J., GOSAK, M., HORVAT, D., ZALIK, B., SEGUY, B., CHAUVEL, R., MALANDAIN, G., COUFFINHAL, T., DUPLAA, C., MARHL, M., ROUX, E., Faculty of Natural Sciences and Mathematics [Maribor], University of Maribor, Faculty of Education [Maribor], Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service des Maladies Cardiaques et Vasculaires [CHU Bordeaux], CHU Bordeaux [Bordeaux], Institute of Physiology [Maribor], Faculty of Electrical Engineering and Computer Science [Maribor], Morphologie et Images (MORPHEME), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut de Biologie Valrose (IBV), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Signal, Images et Systèmes (Laboratoire I3S - SIS), Laboratoire d'Informatique, Signaux, et Systèmes de Sophia Antipolis (I3S), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Laboratoire d'Informatique, Signaux, et Systèmes de Sophia Antipolis (I3S), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Signal, Images et Systèmes (Laboratoire I3S - SIS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), and Boullé, Christelle

Subjects
Computer and Information Sciences, Physiology, Gene Identification and Analysis, Neovascularization, Physiologic, Geometry, lcsh:Medicine, Genetic Networks, metrika, udc:539.2, metrics, Mice, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Blood Flow, Morphogenesis, Medicine and Health Sciences, Genetics, Animals, vascular network, celična polarnost, lcsh:Science, quantitative analyses, lcsh:R, Article RECHERCHE, Cell Polarity, Biology and Life Sciences, Kidneys, Arteries, X-Ray Microtomography, Renal System, Frizzled Receptors, Body Fluids, Capillaries, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Arterioles, cell polarity, Fractals, Blood, Physical Sciences, vaskularno omrežje, Cardiovascular Anatomy, Blood Vessels, kvantitativna analiza, lcsh:Q, Anatomy, Mathematics, Network Analysis, Research Article, Developmental Biology
Abstract

International audience; Quantitative analysis of the vascular network anatomy is critical for the understanding of the vasculature structure and function. In this study, we have combined microcomputed tomography (microCT) and computational analysis to provide quantitative three-dimensional geometrical and topological characterization of the normal kidney vasculature, and to investigate how 2 core genes of the Wnt/planar cell polarity, Frizzled4 and Frizzled6, affect vascular network morphogenesis. Experiments were performed on frizzled4 (Fzd4-/-) and frizzled6 (Fzd6-/-) deleted mice and littermate controls (WT) perfused with a contrast medium after euthanasia and exsanguination. The kidneys were scanned with a high-resolution (16 μm) microCT imaging system, followed by 3D reconstruction of the arterial vasculature. Computational treatment includes decomposition of 3D networks based on Diameter-Defined Strahler Order (DDSO). We have calculated quantitative (i) Global scale parameters, such as the volume of the vasculature and its fractal dimension (ii) Structural parameters depending on the DDSO hierarchical levels such as hierarchical ordering, diameter, length and branching angles of the vessel segments, and (iii) Functional parameters such as estimated resistance to blood flow alongside the vascular tree and average density of terminal arterioles. In normal kidneys, fractal dimension was 2.07±0.11 (n = 7), and was significantly lower in Fzd4-/- (1.71±0.04; n = 4), and Fzd6-/- (1.54±0.09; n = 3) kidneys. The DDSO number was 5 in WT and Fzd4-/-, and only 4 in Fzd6-/-. Scaling characteristics such as diameter and length of vessel segments were altered in mutants, whereas bifurcation angles were not different from WT. Fzd4 and Fzd6 deletion increased vessel resistance, calculated using the Hagen-Poiseuille equation, for each DDSO, and decreased the density and the homogeneity of the distal vessel segments. Our results show that our methodology is suitable for 3D quantitative characterization of vascular networks, and that Fzd4 and Fzd6 genes have a deep patterning effect on arterial vessel morphogenesis that may determine its functional efficiency.

Published
2017
Full Text
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31. Écritures de l’irrationnel : Proust lecteur de Nerval

Author

Bony, J, Chamarat-Malandain, G, Mizuno, H, Bony, J ( J ), Chamarat-Malandain, G ( G ), Mizuno, H ( H ), Wieser, D, Bony, J, Chamarat-Malandain, G, Mizuno, H, Bony, J ( J ), Chamarat-Malandain, G ( G ), Mizuno, H ( H ), and Wieser, D

Published
2010

38. Piecewise Affine Registration of Biological Images

Author

Pitiot, A., Malandain, G., Bardinet, E., Paul Thompson, School of Psychology [Nottingham], University of Nottingham, UK (UON), Medical imaging and robotics (EPIDAURE), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Neurosciences cognitives et imagerie cérébrale (NCIC), Centre National de la Recherche Scientifique (CNRS), Neurologie et thérapeutique expérimentale, Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR70-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratory of Neuro Imaging [Los Angeles] (LONI), University of California [Los Angeles] (UCLA), University of California (UC)-University of California (UC), Gee, James C. and Maintz, J.B.A. and Vannier, and M.W.

Subjects
histology, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, registration, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract

Also research report INRIA RR-4866; International audience; no abstract

Published
2003

39. Evaluation of Registration Methods on Thoracic CT: The EMPIRE10 Challenge

Author

Murphy, K., Ginneken, B. van, Reinhardt, J.M., Kabus, S., Ding, K., Deng, X., Cao, K., Du, K., Christensen, G.E., Garcia, V., Vercauteren, T., Ayache, N., Commowick, O., Malandain, G., Glocker, B., Paragios, N., Navab, N., Gorbunova, V., Sporring, J., Bruijne, M. de, Han, X., Heinrich, M.P., Schnabel, J.A., Jenkinson, M., Lorenz, C., Modat, M., McClelland, J.R., Ourselin, S., Muenzing, S.E., Viergever, M.A., Nigris, D. De, Collins, D.L., Arbel, T., Peroni, M., Li, R., Sharp, G.C., Schmidt-Richberg, A., Ehrhardt, J., Werner, R., Smeets, D., Loeckx, D., Song, G., Tustison, N., Avants, B., Gee, J.C., Staring, M., Klein, S., Stoel, B.C., Urschler, M., Werlberger, M., Vandemeulebroucke, J., Rit, S., Sarrut, D., Pluim, J.P., Murphy, K., Ginneken, B. van, Reinhardt, J.M., Kabus, S., Ding, K., Deng, X., Cao, K., Du, K., Christensen, G.E., Garcia, V., Vercauteren, T., Ayache, N., Commowick, O., Malandain, G., Glocker, B., Paragios, N., Navab, N., Gorbunova, V., Sporring, J., Bruijne, M. de, Han, X., Heinrich, M.P., Schnabel, J.A., Jenkinson, M., Lorenz, C., Modat, M., McClelland, J.R., Ourselin, S., Muenzing, S.E., Viergever, M.A., Nigris, D. De, Collins, D.L., Arbel, T., Peroni, M., Li, R., Sharp, G.C., Schmidt-Richberg, A., Ehrhardt, J., Werner, R., Smeets, D., Loeckx, D., Song, G., Tustison, N., Avants, B., Gee, J.C., Staring, M., Klein, S., Stoel, B.C., Urschler, M., Werlberger, M., Vandemeulebroucke, J., Rit, S., Sarrut, D., and Pluim, J.P.

Abstract

Contains fulltext : 96888.pdf (Publisher’s version ) (Open Access), EMPIRE10 (Evaluation of Methods for Pulmonary Image REgistration 2010) is a public platform for fair and meaningful comparison of registration algorithms which are applied to a database of intrapatient thoracic CT image pairs. Evaluation of nonrigid registration techniques is a nontrivial task. This is compounded by the fact that researchers typically test only on their own data, which varies widely. For this reason, reliable assessment and comparison of different registration algorithms has been virtually impossible in the past. In this work we present the results of the launch phase of EMPIRE10, which comprised the comprehensive evaluation and comparison of 20 individual algorithms from leading academic and industrial research groups. All algorithms are applied to the same set of 30 thoracic CT pairs. Algorithm settings and parameters are chosen by researchers expert in the configuration of their own method and the evaluation is independent, using the same criteria for all participants. All results are published on the EMPIRE10 website (http://empire10.isi.uu.nl). The challenge remains ongoing and open to new participants. Full results from 24 algorithms have been published at the time of writing. This paper details the organization of the challenge, the data and evaluation methods and the outcome of the initial launch with 20 algorithms. The gain in knowledge and future work are discussed.

Published
2011

40. Evaluation of registration methods on thoracic CT:the EMPIRE10 challenge

Author

Murphy, K., van Ginneken, B., Reinhardt, J., Kabus, S., Ding, K., Deng, X., Cao, K., Du, K., Christensen, G., Garcia, V., Vercauteren, T., Ayache, N., Commowick, O., Malandain, G., Glocker, B., Paragios, N., Navab, N., Gorbunova, Vladlena, Sporring, Jon, de Bruijne, Marleen, Han, X., Heinrich, M., Schnabel, J., Jenkinson, M., Lorenz, C., Modat, M., McClelland, J., Ourselin, S., Muenzing, S., Viergever, M., De Nigris, D., Collins, D., Arbel, T., Peroni, M., Li, R., Sharp, G., Schmidt-Richberg, A., Ehrhardt, J., Werner, R., Smeets, D., Loeckx, D., Song, G., Tustison, N., Avants, B., Gee, J., Staring, M., Klein, S., Stoel, B., Urschler, M., Werlberger, M., Vandemeulebroucke, J., Rit, S., Sarrut, D., Pluim, J., Murphy, K., van Ginneken, B., Reinhardt, J., Kabus, S., Ding, K., Deng, X., Cao, K., Du, K., Christensen, G., Garcia, V., Vercauteren, T., Ayache, N., Commowick, O., Malandain, G., Glocker, B., Paragios, N., Navab, N., Gorbunova, Vladlena, Sporring, Jon, de Bruijne, Marleen, Han, X., Heinrich, M., Schnabel, J., Jenkinson, M., Lorenz, C., Modat, M., McClelland, J., Ourselin, S., Muenzing, S., Viergever, M., De Nigris, D., Collins, D., Arbel, T., Peroni, M., Li, R., Sharp, G., Schmidt-Richberg, A., Ehrhardt, J., Werner, R., Smeets, D., Loeckx, D., Song, G., Tustison, N., Avants, B., Gee, J., Staring, M., Klein, S., Stoel, B., Urschler, M., Werlberger, M., Vandemeulebroucke, J., Rit, S., Sarrut, D., and Pluim, J.

Abstract

EMPIRE10 (Evaluation of Methods for Pulmonary Image REgistration 2010) is a public platform for fair and meaningful comparison of registration algorithms which are applied to a database of intra-patient thoracic CT image pairs. Evaluation of non-rigid registration techniques is a non trivial task. This is compounded by the fact that researchers typically test only on their own data, which varies widely. For this reason, reliable assessment and comparison of different registration algorithms has been virtually impossible in the past. In this work we present the results of the launch phase of EMPIRE10, which comprised the comprehensive evaluation and comparison of 20 individual algorithms from leading academic and industrial research groups. All algorithms are applied to the same set of 30 thoracic CT pairs. Algorithm settings and parameters are chosen by researchers expert in the configuration of their own method and the evaluation is independent, using the same criteria for all participants. All results are published on the EMPIRE10 website (http://empire10.isi.uu.nl). The challenge remains ongoing and open to new participants. Full results from 24 algorithms have been published at the time of writing. This article details the organisation of the challenge, the data and evaluation methods and the outcome of the initial launch with 20 algorithms. The gain in knowledge and future work are discussed.

Published
2011

44. Atlas-based automatic segmentation (ABAS) of head and neck (H&N) structures in conformal radiotherapy (CRT): Atlas development and preliminary results in clinical context

Author

UCL - Cliniques universitaires Saint-Luc, UCL, Isambert, A., Grégoire, Vincent, Bidault, F., Calais, G., Commowick, O., Malandain, G., Ruaud, J. B., Tomsej, M., Bramoulle, C., Bourhis, J., Lefkopoulos, D., 9th Biennial Meeting on Physics and Radiation Technology for Clinical Radiotherapy, UCL - Cliniques universitaires Saint-Luc, UCL, Isambert, A., Grégoire, Vincent, Bidault, F., Calais, G., Commowick, O., Malandain, G., Ruaud, J. B., Tomsej, M., Bramoulle, C., Bourhis, J., Lefkopoulos, D., and 9th Biennial Meeting on Physics and Radiation Technology for Clinical Radiotherapy

Published
2007

45. Atlas-based automatic segmentation (ABAS) of head structures in conformal radiation therapy (CRT): atlas development and preliminary results in clinical context

Author

UCL - Cliniques universitaires Saint-Luc, UCL, Isambert, A., Grégoire, Vincent, Dhermain, F., Bidault, E., Bourhis, J., Calais, G., Kafrouni, H., Ruaud, J. B., Diaz, J. C., Commowick, O., Malandain, G., Tomsej, M., Bramoulle, C., Wittig, A., Sauerwein, W., Mills, J., Lefkopoulos, D., 13th Congress of the Deutschen-Gesellschaft-fur-Radioonkologie, UCL - Cliniques universitaires Saint-Luc, UCL, Isambert, A., Grégoire, Vincent, Dhermain, F., Bidault, E., Bourhis, J., Calais, G., Kafrouni, H., Ruaud, J. B., Diaz, J. C., Commowick, O., Malandain, G., Tomsej, M., Bramoulle, C., Wittig, A., Sauerwein, W., Mills, J., Lefkopoulos, D., and 13th Congress of the Deutschen-Gesellschaft-fur-Radioonkologie

Published
2007

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