Micro-elastography: Toward ultrasonic shear waves in soft solids

Since shear waves in soft human tissues have been used clinics, little is known about their upper frequency behavior except that they fade out before the ultrasonic regime due to viscoelastic dissipation. Studying this bound has become a need micro-elastography aims at characterizing single cell using waves. We report through phantom experiments observation of 20.4 kHz. Moreover, it shown Kelvin–Voigt model can predict good agreement with experiments. At last, according simple rheological model, maximum error elasticity estimation when viscosity neglected (wide spread perfectly elastic assumption) 40%.