Supersonic shear imaging (SSI) is a new ultrasound-based technique for real-time
visualization of soft tissue viscoelastic properties. Using ultrasonic focused beams, it is
possible to remotely generate mechanical vibration sources radiating low-frequency, shear …

An overview of time reversal techniques is presented in this paper. In the first section, we
focus on the ability of using reflecting targets embedded in the body as sources of time
reversal waves. Real time tracking and destruction of moving kidney stones are …

Section 1 is devoted to the description of time reversal cavities and mirrors together with a comparison
between time reversal and phase conjugation. To illustrate these concepts, several experiments
conducted in multiply scattering media, waveguides and chaotic cavities are presented in section …

This paper presents an initial clinical evaluation of in vivo elastography for breast lesion
imaging using the concept of supersonic shear imaging. This technique is based on the
combination of a radiation force induced in tissue by an ultrasonic beam and an ultrafast …

The emergence of ultrafast frame rates in ultrasonic imaging has been recently made
possible by the development of new imaging modalities such as transient elastography.
Data acquisition rates reaching more than thousands of images per second enable the real …

Elastography is a technique to assess the viscoelastic properties of tissue by measuring an
acoustic wave propagating though the object. Here, the technique is applied in the course of
standard MR mammography to 15 patients with different pathologies (six breast cancer …

Purpose To determine the appearance of breast lesions at quantitative ultrasonographic
(US) elastography by using supersonic shear imaging (SSI) and to assess the correlation
between quantitative values of lesion stiffness and pathologic results, which were used as …

In previous work, we have shown that time-resolved 2-D transient elastography is a
promising technique for characterizing the elasticity of soft tissues. It involves the
measurement of the displacements induced by the propagation of low frequency (LF) pulsed …

Supersonic shear imaging (SSI) has recently been demonstrated to be a repeatable and
reproducible transient bidimensional elastography technique. We report a prospective
clinical evaluation of the performances of SSI for liver fibrosis evaluation in 113 patients with …

The possibility of recovering the Green's function from the field-field correlations of coda
waves in an open multiple scattering medium is investigated. The argument is based on
fundamental symmetries of reciprocity, time-reversal invariance, and the Helmholtz …