Medical ultrasound images are reconstructed with simplifying assumptions on wave
propagation, with one of the most prominent assumptions being that the imaging medium is …

Tissue harmonic imaging (THI) is a new gray-scale sonographic technique that improves
image clarity. Harmonics form within the insonated tissue as a consequence of nonlinear …

A model and method to accurately estimate the local speed of sound in tissue from pulse-
echo ultrasound data is presented. The model relates the local speeds of sound along a …

Ultrasonic pulse propagation through the human abdominal wall has been simulated using
a model for two-dimensional propagation through anatomically realistic tissue cross …

A method for the direct estimation of the longitudinal speed of sound in a medium is
presented. This estimator derives the speed of sound through analysis of pulse–echo data …

One of the primary sources of suboptimal image quality in ultrasound imaging is phase
aberration. It is caused by spatial changes in sound speed over a heterogeneous medium …

One of the main sources of image degradation in ultrasound imaging is the phase aberration
effect, which imposes limitations to both data acquisition and reconstruction. Phase …

Tissue speed of sound inhomogeneities cause significant degradation of medical ultrasound
images. In certain cases these inhomogeneities can be modeled as a thin, spatially varying …

One of the challenges of transcutaneous high-intensity focused ultrasound (HIFU) therapies,
especially ones relying heavily on shock formation, such as boiling histotripsy (BH), is the …

The relative importance of the fat and muscle layers of the human abdominal wall in
producing ultrasonic wavefront distortion was assessed by means of direct measurements …