The authors propose a robust model for characterizing the statistical nature of signals
obtained from ultrasonic backscatter processes. The model can accommodate frequency …

Attenuation measurements were performed on the quadriceps femoris muscle of 10 normal
volunteers. The measurements were made using a statistical narrowband pulse echo …

Measurements are reported on the ultrasonic attenuation coefficient, the velocity of sound
propagation and the differential scattering coefficient (for 180° scattering) for 3 types of …

Quantitative ultrasound techniques using backscattered echoes have had limited success in
vivo due to the frequency-dependent attenuation along the entire propagation path masking …

Ultrasonic attenuation in the frequency range 1–7 MHz, and the speed of sound, were
determined experimentally in both fresh and fixed bovine and human soft tissues for various …

Estimations of scattering parameters, such as average scatterer diameter, from rf signals
backscattered from random media (tissues) are made from the frequency dependence of the …

A large range of values for ultrasonic attenuation and absorption coefficients of tissues are
reported in the literature. An important distinction both practically and theoretically is the …

Two ultrasonic scattering models for human tissue are suggested, one in which the
homogeneities are discrete and the other an inhomogeneous continuum. After discussing …

Manuscript received November 22, 1978; revised April 30, 1979. This work was supported in
part by the National Science Foundation under Grant NSF APR 76-83871 and in part by the …

The reliability of the estimation of the size of scattering structures is assessed by realistic
simulations and phantom experiments. The acoustic tissue model used in the simulation …