Title :
Ultrasound-based noninvasive shear elasticity probe for soft tissues
Author :
Catheline, Stefan ; Sandrin, Laurent ; Gennisson, Jean-Luc ; Tanter, Mickael ; Fink, Mathias
Author_Institution :
Lab. Ondes et Acoust., Paris VII Univ., France
Abstract :
An ultrasonic technique for measuring the viscoelastic properties of soft tissues is presented. This technique uses a transducer set up on a vibrator as a source of high frequency waves (ultrasound) and low frequency waves (shear wave) at the same time. Ultrasound (5 MHz) allows one to detect the displacements induced by the shear waves (200 Hz) inside soft biological tissues. These shear waves reveal pieces of information about the shear elasticity and the shear viscosity. Two kinds of media are investigated: agar-gelatin phantoms and in-vivo human biceps
Keywords :
Young´s modulus; acoustic correlation; biological tissues; biomechanics; biomedical transducers; biomedical ultrasonics; elastic waves; ultrasonic transducers; viscosity; 200 Hz; 5 MHz; agar-gelatin phantoms; displacements; high frequency waves; in-vivo human biceps; low frequency waves; shear elasticity; shear viscosity; shear wave; soft biological tissues; soft tissues; transducer set up; ultrasound-based noninvasive shear elasticity probe; vibrator; viscoelastic properties; Biological tissues; Elasticity; Frequency; Humans; Imaging phantoms; Probes; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement; Viscosity;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.921672
