CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

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  • CINaM
  • Campus de Luminy
  • Case 913
  • 13288 Marseille Cedex 9
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  • Tel : +33(0)4 91 17 28 00
  • Fax : +33(0)4 91 41 89 16

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Séminaires

jeudi 14 décembre 2017 à 14H00
CINaM - Salle Raymond Kern
Emilie Franceschini
Laboratoire de Mécanique et d’Acoustique LMA CNRS UPR 7051
Ultrasonics reveal red blood cell aggregation and cell death index

Quantitative UltraSound (QUS) techniques for estimating cellular structures are based on frequency analysis of signals backscattered from biological tissues. Our QUS method is model-based: the backscatter coefficient (obtained from the power spectrum of the backscattered signals) is estimated from experiments and is fit to a theoretical scattering model. The fit parameters can provide a meaningful description of the tissue microstructure (i.e., scatterer size, shape, scattering strength and spatial organization). During this seminar, I will focus on two questions in the field of QUS:

1) How the high cellular number density and cell clustering in blood affect ultrasound backscattering?

2) What causes an increase of ultrasound backscatter during the cell death process?

Invitation : Emmanuèle HELFER - Entrée libre