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专业: 认知科学

[交流] 法国UPMC大学博士生招聘

About the university:
UPMC (University Pierre and Marie Curie) is ranked as the #1 French university in international rankings. It is located in the center of Paris. http://www.inria.fr
About the laboratory:
ARAMIS Lab is focused on the development of new computer and engineering approaches for the analysis of brain images. It comprises around 35 people with expertise in applied mathematics, image/signal processing and software development. It is a joint team between INRIA (National Institute of Computer Science and Applied Mathematics), CNRS (National Center for Scientific Research), Inserm (National Institute of Health) and University Pierre and Marie Curie. http://www.aramislab.fr

Profile of the applicant:
We are looking for outstanding candidates with a background in computer engineering, electrical engineering or/and applied mathematics. A good level of scientific English is required.

How to apply:
contact olivier.colliot@upmc.fr and stanley.durrleman@inria.fr and submit your application at:
http://candidature.sorbonne-universites.fr/images/emundus/prog_CSC_doctorants_%C3%A9tape_2_ENGLISH_7d813.pdf

Application deadline : February 28th, 2015
Duration: The PhD position is funded for 48 months
Scientific domain: Computer Science and Electrical Engineering
Key words: Shape analysis, Medical Image Computing, Image analysis, Neuroimaging
PhD supervisors: Olivier Colliot (olivier.colliot@upmc.fr) and Stanley Durrleman (stanley.durrleman@inria.fr)
PhD subject:
Cortical morphometry for discovering new biomarkers of neurodegenerative diseases. The ARAMIS team ( www.aramislab.fr ) is developing advanced methods for the statistical analyses of the shape of brain structures. These approaches are applied to detect alterations in neurodegenerative disorders, in order to enhance their early diagnosis. The principle of our approach is to estimate anatomical configuration prototypes whose topology reflects the organization of different structures studied. These prototypes configurations are mapped to the anatomical data of each subject through regular deformations of the space. The parameters of these deformations, which are also optimized, are used for statistical analysis. They can be used in classification or regression tasks to model anatomical changes depending on clinical or behavioral variables. Until now, these methods have been mainly applied to subcortical structures, including in particular the hippocampus which is a known marker of Alzheimer's disease. The purpose of this thesis is to extend these methods to cortical structures. Indeed, it is quite clear that neuronal death in neurodegenerative diseases induces thinning of the cortex, as well as a widening and a reduction in the depth of the cortical sulci. However, there is very little work to date for a systematic and quantitative assessment of these anatomical changes. The main challenge lies in the comparison of the shape of the cortex between different subjects. Indeed, the shape, topology, and the number of sulci are specific to each subject. The primary aim of the thesis will be to adapt the registration algorithms developed in the team to carry out a mapping of cortical surfaces that takes into account the location of the main sulci and that adapts to topology changes. Then, this registration method will be used for estimating cortical prototype configurations. The use of multi-class methods will allow the estimation of several prototypes and provide a partition of the set of subjects according to the shape and topology of their cortical sulci. The thesis will build on the Deformetrica software developed in the ARAMIS team for the registration of anatomical surfaces and estimation of statistical models. The methods will be evaluated on the public database of the Alzheimer's Disease Neuroimaging Initiative ( www.adni-info.org ) containing MRI images of hundreds of subjects at various disease stages as well as on local databases of patients with Alzheimer’s disease and other neurodegenerative dementias.
Related publications:
Gori P, Colliot O, Worbe Y, Marrakchi-Kacem L, Lecomte S, Poupon C, Hartmann A, Ayache N, and Durrleman S, Bayesian Atlas Estimation for the Variability Analysis of Shape Complexes, In Proc. Medical Image Computing and Computer-Assisted Intervention, MICCAI 2013, Lecture Notes in Computer Science, Nagoya, Japan, September 2013.
Durrleman S, Prastawa M, Charon N, Korenberg JR, Joshi S, Gerig G, Trouv?? A. Morphometry of anatomical shape complexes with dense deformations and sparse parameters. Neuroimage. 2014 Nov 1;101:35-49. doi: 10.1016/j.neuroimage.2014.06.043. Epub 2014 Jun 26.

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