Shear velocity of muscle tissues

Investigations on shear wave velocities in a large number of elastoplastic muscle tissues of dead animals (ox, sheep, and goat) were carried out at 1 MHz frequency by the ultrasonic pulse transmission technique and their rigidity and stiffness modulus estimated after determining the density due to displacement in mercury. Information on compressional wave velocity and acoustic impedance, together with the elastic properties and some results on shear velocity anisotropy are also presented. It is interesting to note that irrespective of organ, species and direction of measurement, the results of velocity, rigidity and stiffness fall within very narrow limits owing to their nearly identical amino acid composition.