Passive elastography: shear-wave tomography from physiological-noise correlation in soft tissues

Thomas Gallot (1) , Stefan Catheline (1) , Philippe Roux (2) , Javier Brum (2) , N. Benech (1) , C. Negreira (1)

1 ISTerre - Institut des Sciences de la Terre
2 Ondes et Structures

Inspired by seismic-noise correlation and time reversal, a shear-wave tomography of soft tissues using an ultrafast ultrasonic scanner is presented here. Free from the need for controlled shear-wave sources, this passive elastography is based on Green's function retrieval and takes advantage of the permanent physiological noise of the human body.

Keywords: Acoustics; Tomography; Green's function methods; biological tissues; biomechanics; biomedical ultrasonics; elastic waves; elasticity; liver; noise; phantoms; physiology; Correlation; Estimation; Frequency estimation

Domains: Geomorphology

Thomas Gallot, Stefan Catheline, Philippe Roux, Javier Brum, N. Benech, et al.. Passive elastography: shear-wave tomography from physiological-noise correlation in soft tissues. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011, 58 (6), pp.1122-1126. ⟨10.1109/TUFFC.2011.1920⟩. ⟨insu-00680313⟩