LMA - Laboratoire de Mécanique et d’Acoustique

Post-Doctoral position offer : "Diagnosis of the integrity of growing biological materials using quantitative ultrasound imaging"

Le 3 décembre 2018 à 08h40

Essential skills : acoustics, direct and inverse problems, numerical modelling, ultrasonic experimentation
Desired skills : signal processing, electronics

Research project and job description

Title : Diagnosis of the integrity of growing biological materials using quantitative ultrasound imaging

Summary : Long bones and (green) wood are two living materials with similar structural characteristics. They evolve with age and adapt to environmental constraints. These changes result in complex variations. Their mechanical properties vary in time and space in successive stages from the juvenile to the mature state. The study of the quality of these materials (diagnosis) for better management of dysfunctions (care) is the subject of advanced research. Among the control/diagnosis protocols, acoustic and ultrasonic methods occupy privileged positions. For example, biomedical ultrasound is known to be appropriate in assessing the risk of femoral neck fracture in women but remains controversial for the diagnosis of children’s bone pathologies [1]. For trees, there are several auscultation tools available, but they lack precision and are limited to using a single parameter to monitor the complex evolution of a tree during its growth [2]. The potential of acoustic and ultrasonic methods is still under-exploited in the biomedical and xylology fields. This project aims to fill this gap by conducting a numerical and experimental study of these two materials in terms of characterization, acoustic and ultrasonic imaging to develop in vivo or in situ monitoring systems, and provide a qualitative (resolution) and quantitative (parameters) diagnosis. The project was divided into several complementary phases, such as numerical modeling of the interaction between waves and medium, the inverse problem based on the Full Waveform Imaging approach, and the development of experimental devices.

[1] P. Lasaygues et al., Bone Quantitative Ultrasound, Springer Netherlands, 2011, pp. 441–459. [2] A. Arciniegas et al., “Literature review of acoustic and ultrasonic tomography in standing trees,” Trees, Aug. 2014.

The post-doc will take place at the Laboratory of Mechanics and Acoustics (LMA) and will be supervised by Philippe Lasaygues (lasaygues@lma.cnrs-mrs.fr) as part of the "Waves and Imaging" team.

Job description : Candidates must have a PhD in acoustics or mechanics, and a strong interest in research on biological and/or natural materials. Candidates will have excellent written and oral communication skills.
Essential skills : acoustics, direct and inverse problems, numerical modelling, ultrasonic experimentation
Desired skills : signal processing, electronics

Duration : 1 year
Period : September 2019 – August 2020
Location : Marseille, France
Gross salary : from 2423 € to 2843 €/mont (depending on qualification and experience)
Labex team Axis, action, part : "Heterogeneity, Multi-scale, Scale change", "Heterogeneous material characterization"," Health and Environment"
Labex team Contact : Sergey Gavrilyuk (Mail : sergey.gavrilyuk@univ-amu.fr)


How to apply Send an application including :

  • A detailed CV with a list of publications
  • A cover letter
  • A list of scientific personalities able to comment on the application
    to both these addresses :
    • Relevant group leader (Lasaygues@lma.cnrs-mrs.fr)
    • Labex management (LabexConseilCoordination@irphe.univ-mrs.fr)
      Word - 425 ko

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