Brain palpation from physiological vibrations using MRI

A Zorgani, R Souchon, AH Dinh… - Proceedings of the …, 2015 - National Acad Sciences
We present a magnetic resonance elastography approach for tissue characterization that is
inspired by seismic noise correlation and time reversal. The idea consists of extracting the …

Focal spot imaging based on zero lag cross‐correlation amplitude fields: Application to dense array data at the San Jacinto fault zone

G Hillers, P Roux, M Campillo… - Journal of Geophysical …, 2016 - Wiley Online Library
We image the subsurface below a dense seismic array straddling the Clark branch of the
San Jacinto fault zone in Southern California. The analysis is based on focal spots of surface …

Shear wave elastography based on noise correlation and time reversal

J Brum, N Benech, T Gallot, C Negreira - Frontiers in Physics, 2021 - frontiersin.org
Shear wave elastography (SWE) relies on the generation and tracking of coherent shear
waves to image the tissue's shear elasticity. Recent technological developments have …

Tomography from diffuse waves: Passive shear wave imaging using low frame rate scanners

S Catheline, R Souchon, M Rupin, J Brum… - Applied Physics …, 2013 - pubs.aip.org
We present an approach to extract from the local measurement of a complex field a
wavelength tomography. In contrast with noise correlation techniques developed in recent …

[HTML][HTML] Longitudinal shear wave and transverse dilatational wave in solids

S Catheline, N Benech - The Journal of the Acoustical Society of …, 2015 - pubs.aip.org
Dilatation wave involves compression and extension and is known as the curl-free solution
of the elastodynamic equation. Shear wave on the contrary does not involve any change in …

Enhanced instantaneous elastography in tissues and hard materials using bulk modulus and density determined without externally applied material deformation

Y **, E Walker, A Krokhin, H Heo… - IEEE transactions on …, 2019 - ieeexplore.ieee.org
Ultrasound is a continually develo** technology that is broadly used for fast, non-
destructive mechanical property detection of hard and soft materials in applications ranging …

Super-resolution limit of shear-wave elastography

C Zemzemi, A Zorgani, L Daunizeau… - Europhysics …, 2020 - iopscience.iop.org
When a wave field is measured within a propagative medium, it is widely accepted that the
resulting image resolution depends on the measuring point density, and no longer on the …

Seismic surface wave focal spot imaging: numerical resolution experiments

B Giammarinaro, C Tsarsitalidou… - Geophysical Journal …, 2023 - academic.oup.com
Numerical experiments of seismic wave propagation in a laterally homogeneous layered
medium explore subsurface imaging at subwavelength distances for dense seismic arrays …

Magnetic microelastography for evaluation of ultrasound-induced softening of pancreatic cancer spheroids

G Laloy-Borgna, L Vovard, A Rohfritsch, L Wang… - Physical Review …, 2024 - APS
Pancreatic ductal adenocarcinoma is a devastating disease with very low survival rates 5
years after diagnosis. The main reason for this dismal prognosis is the thick stroma which …

[HTML][HTML] Investigating the lateral resolution of the Rayleigh wave focal spot imaging technique using two-dimensional acoustic simulations

B Giammarinaro… - Comptes …, 2024 - comptes-rendus.academie-sciences …
We investigate the lateral resolution power of the seismic Rayleigh wave focal spot imaging
technique. We use two-dimensional acoustics simulations in a closed cavity for the passive …