Several techniques have been developed in an effort to estimate mechanical properties of
tissues. These techniques typically estimate static or harmonic motion resulting from an
externally or internally applied mechanical stimulus. In this paper, we discuss the
advantages of utilizing a new technique that performs radiofrequency (RF) signal tracking to
estimate the localized oscillatory motion resulting from the harmonic radiation force
produced by two focused ultrasound (US) transducer elements with overlapping beams …