Title :
Passive elastography: shear-wave tomography from physiological-noise correlation in soft tissues
Author :
Gallot, Thomas ; Catheline, Stefan ; Roux, Philippe ; Brum, Javier ; Benech, Nicolas ; Negreira, Carlos
Author_Institution :
Lab. de Geophys. Interne et Tectonophysique, Univ. J. Fourier, Grenoble, France
fDate :
6/1/2011 12:00:00 AM
Abstract :
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 :
Green´s function methods; biological tissues; biomechanics; biomedical ultrasonics; elastic waves; elasticity; liver; noise; phantoms; physiology; tomography; Green´s function retrieval; human body; passive elastography; physiological noise; physiological-noise correlation; shear-wave tomography; soft tissues; ultrafast ultrasonic scanner; Acoustics; Correlation; Estimation; Frequency estimation; Noise; Tomography; Abdomen; Algorithms; Elastic Modulus; Elasticity Imaging Techniques; Humans; Hydrogel; Liver; Models, Biological; Phantoms, Imaging; Signal Processing, Computer-Assisted; Tomography;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.1920
