Biologic tissue has been modelled as a viscoelastic Voigt body for the propagation of ultrasound. The tissues considered are man and cow livers, dog myocardial tissue, and cow tongue. Published ultrasonic attenuation data have been correlated, on the basis of a single relaxation frequency, in the frequency range of 0.8–10 MHz. From this correlation, approximate values of elastic moduli have been estimated. The value of the shear modulus appears to be negligible compared to that of the bulk modulus. The value of the relaxation bulk modulus depends upon the type of tissue and its orientation to the sonic beam. The velocity dispersion in tissue has been estimated from the values of bulk moduli.
AhujaA. S., Acoustical properties of blood: A look at the basic assumptions, Med. Phys. 1, 311–316 (1974).
2.
CarstensenE. L.SchwanH. P., Acoustic properties of hemoglobin solutions, J. Acoust. Soc. Am. 31, 305–311 (1959).
3.
SchneiderF.LandauMűller F.MayerA., Acoustical properties of aqueous solutions of oxygenated and deoxygenated hemoglobin, Biopolymers8, 537–544 (1969).
4.
PaulyH.SchwanH. P., Mechanism of absorption of ultrasound in liver tissue, J. Acoust. Soc. Am. 50, 692–699 (1971).
5.
AhujaA. S., Effect of particle viscosity on propagation of sound in suspensions and emulsions, J. Acoust. Soc. Am. 52, 182–191 (1972).
6.
AhujaA. S.HendeeW. R., Effects of red cell shape and orientation on propagation of sound in blood, Med. Phys. 4, 516–520 (1977).
7.
ShungK. K.SigelmannR. A.ReidJ. M., Scattering of ultrasound in blood, IEEE Trans. Biomed. Eng. 23, 460–467 (1976).
8.
ShungK. K.SigelmannR. A.ReidJ. M., Angular dependence of scattering of ultrasound from blood, IEEE Trans. Biomed. Eng. 24, 325–331 (1977).
9.
FrenkelJ., Kinetic Theory of Liquids (Dover, New York, 1955).
10.
RaichelD. R., Sound propagation in Voigt fluid, J. Acoust. Soc. Am. 52, 395–398 (1972).
11.
ChiversR. C.HillC. R., Ultrasonic attenuation in human tissue, Ultrasound Med. Biol. 2, 25–29 (1975).
12.
O'DonnellM.MimbsJ. W.SobleB. E.MillerJ. G., Ultrasonic attenuation of myocardial tissue: Dependence on time after excision and on temperature, J. Acoust. Soc. Am. 62, 1054–1057 (1977).
13.
HueterT. F., Messung der ultraschallabsorption in tierischen geweben und ihre abhangigkeit von der frequenz, Naturwissenschaften35, 285–287 (1948).
14.
HerzfeldK. F.LitovitzT. A., Absorption and Dispersion of Ultrasonic Waves (Academic Press, New York, 1959).
15.
FrizzellL. A.CarstensenE. L.DyroJ. F., Shear properties of mammalian tissues at low megahertz frequencies, J. Acoust. Soc. Am. 60, 1409–1411 (1977).
