Title :
Shear elasticity probe for soft tissues with 1-D transient elastography
Author :
Sandrin, Laurent ; Tanter, Mickaël ; Gennisson, Jean-Luc ; Catheline, Stefan ; Fink, Mathias
Author_Institution :
Lab. Ondes et Acoustique, CNRS, Paris, France
fDate :
4/1/2002 12:00:00 AM
Abstract :
Important tissue parameters such as elasticity can be deduced from the study of the propagation of low frequency shear waves. A new method for measuring the shear velocity in soft tissues is presented in this paper. Unlike conventional transient elastography in which the ultrasonic transducer and the low frequency vibrator are two separated parts, the new method relies on a probe that associates the vibrator and the transducer, which is built on the axis of the vibrator. This setup is easy to use. The low frequency shear wave is driven by the transducer itself that acts as a piston while it is used in pulse echo mode to acquire ultrasonic lines. The results obtained with the new method are in good agreement with those obtained with the conventional one.
Keywords :
Young´s modulus; biomedical equipment; biomedical measurement; biomedical ultrasonics; elasticity; patient diagnosis; probes; shear modulus; ultrasonic transducers; ultrasonic velocity measurement; ultrasonic waves; 1D transient elastography; LF shear wave propagation; US transducer; combined vibrator/transducer; low frequency shear waves; low frequency vibrator; noninvasive technique; pulse echo mode; shear elasticity probe; shear velocity measurement; soft tissues; tissue stiffness; Biological tissues; Elasticity; Frequency; Muscles; Pistons; Probes; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement; Viscosity; Algorithms; Elasticity; Equipment Design; Humans; Phantoms, Imaging; Transducers; Ultrasonography; Vibration;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
