Global and local attenuation coefficient estimates were calculated using three methods: the
envelope peak method, the central-frequency-downshift method, and the zero-crossing …

Scattering of ultrasound by biological tissues (continuous-inhomogeneous media) is
discussed. An analytical expression for the attenuation due to scattering (α SC T) and …

The acoustic attenuation coefficient of soft biological tissue has been observed to have an
increasing linear-with-frequency attenuation characteristic with a slope, denoted by β, that …

The authors deal with the application of parametric spectral analysis for attenuation
estimation on the reflected ultrasound signal of biological tissues. A second-order …

In this paper, a closed‐form expression is derived for the absorption of ultrasound by
biological tissues. In this expression, the viscothermal and viscoelastic theories of relaxation …

For pt. I see ibid., vol. 35, no. 2, p. 242 (1988). To determine the relative contributions of
ultrasonic loss mechanisms in tissues, independent measurements of total attenuation and …

Studies conducted in this laboratory to explore the feasibility of utilizing acoustic impedance,
attenuation, and scattering characteristics of tissues for enhancing the diagnostic …

Accurate characterization of tissue pathologies using ultrasonic attenuation is strongly
dependent on the accuracy of the algorithm that is used to obtain the attenuation coefficient …

The frequency dependence of RF signals backscattered from random media (tissues) has
been used to describe the microstructure of the media. The frequency dependence of the …

A theoretical analysis of soft-tissue ultrasonic scattering has been used to formulate specific
results describing spectral parameters for tissue characterization. Results are applicable to …