M2 Internship – Simulation of ultrasound and shear wave propagation in heterogeneous biological tissues: Modelling artefacts in pulse elastography

Background : Elastography is a non-invasive medical imaging method used to map the elasticity of biological tissues, which is essential for diagnosing pathologies. One of the most common applications is the diagnosis of liver fibrosis. Pulse elastography generates mechanical waves in tissues in response to a pulse applied to the surface of the skin. Although this method provides an accurate assessment of tissue stiffness, the quality of elastograms can be compromised by ultrasound artefacts, making interpretation of the results more complex. This internship, part of a collaboration between ESEO and Echosens, is funded by Echosens and will take place at ESEO Angers under the supervision of researchers.

Problematic: Reverberation and scattering artefacts, caused by multiple reflections within different tissue layers (skin, fat, muscle), can mask critical anatomical structures and distort elasticity measurements. These phenomena are poorly understood and difficult to quantify. The scientific challenge is to model the complex interactions between ultrasound waves (high frequencies) and mechanical waves (low frequencies) in heterogeneous biological environments to better understand and classify these artefacts.

More information on the link below.