Most ultrasonic diagnostic equipment are based on the observation of the waves scattered
by tissues. Although these instruments generally perform useful clinical diagnosis, they do …

A method that includes diffraction effects is introduced for the tomographic reconstruction of
the ultrasonic velocity distribution of an object. The reconstruction is in the spatial frequency …

Acoustic models of soft biological tissues are discussed. The methods to derive acoustic
bulk parameters, ie attenuation coefficient and backscattering coefficient are outlined. When …

A digital image reconstruction technique demonstrates the feasibility of imaging the
ultrasonic reflectivity in tissue cross sections using the backscattered energy recorded for …

A method is suggested for reconstructing separate images of the variations in density and
compressibility in the same tissue sample. The images can be obtained from near-field …

A new method has been developed for the automatic correction for attenuation in ultrasonic
pulse-echo imaging. By assuming that a specified relationship holds between local …

After reviewing the usual models proposed for the echographic response of soft tissues, we
discuss the interaction between the ultrasonic wave and large size obstacles. Structures of …

A known method for the determination of the attenuation coefficient of tissues involves the
measurement of the center frequency downshift of Gaussian spectra. The tissue is generally …

The principles of a narrowband technique for pulse echo attenuation measurements are
presented. Experiments are described which compare the attenuation in tissue-mimicking …

In previous work, we demonstrated that accurate backscatter coefficient measurements are
obtained with a data reduction method that explicitly accounts for experimental factors …