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The purpose of our work is to understand the ultrasound backscattering by tumors. The cancerous tumors often result from the proliferation of abnormal cells forming a growing mass. The classical ultrasound scattering models used by the cellular structure estimation technique assume that the scatterers are randomly and independently distributed (i.e. diluted media), whereas the tumors can be considered as concentrated media. The scientific challenge is to answer the following questions : what are the scattering models adapted to densely packed cells ? What are the main structures responsible for the ultrasound scattering by tumors ?
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Paru dans la Provence du mardi 31 mars 2015.
Depuis 2008, le LMA participe au développement d’une plateforme de formation technique sur l’échographie médicale commune à l’IUT d’Aix-Marseille, Polytech Marseille et Centrale Marseille. Cette plateforme propose différents modules d’échographie conventionnelle, d’échographie Doppler, et depuis peu, d’élastographie. Pour ce dernier module, le président d’Aix-Marseille Université, Pr Y. Berland a inauguré, lundi 30 mars, avec plusieurs personnalités de l’enseignement et de la recherche marseillais, la mise en place d’un nouvel Aixplorer de la Société Supersonic Imagine.
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Our aim is to develop an ultrasound diagnostic tool allowing to measure quantitative parameters that reflect the red blood cell aggregation state in situ and in vivo. This tool will allow to quantify the hyperaggregation associated with several circulatory diseases (such as deep venous thrombosis, atherosclerosis, diabetes mellitus, ...) using quantitative ultrasound backscatter techniques.
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Une technique ultrasonore d’estimation des structures cellulaires a été récemment développée au LMA pour la caractérisation tissulaire.
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Curriculum Vitae
Education
2013 - current Ph.D. in Ultrasound Imaging, Aix-Marseille Université. Laboratoire de Mécanique et d’Acoustique (LMA), Marseille, France Ph.D. Ultrasound characterization of erythrocyte aggregation
2012 - 2013 Specialization in Bio-engineering, Arts et Métiers Paristech, Paris - Bordeaux, France
2009 - 2013 Generalist engineer, Mechanical Engineering. Arts et Métiers Paristech, Aix en Provence, France
Work Experience
2013 2 months Part-time (...)
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The theme “Medical Ultrasound” develops new ultrasound-based techniques for the characterization and imaging of biological tissues such as the breast, bone and blood. Research progresses concern the inverse problems in wave propagation with all the fundamental aspects involved: the understanding of the mechanisms of interaction between wave and scatterers, the data acquisition strategy, their inversion and the image reconstruction with the quantitative character (in opposition to the qualitative character of conventional ultrasonic imaging).