Finite amplitude distortion-based inhomogeneous pulse echo ultrasonic imaging

T Christopher - IEEE transactions on ultrasonics, ferroelectrics …, 1997 - ieeexplore.ieee.org
Ultrasonic pulse echo imaging in inhomogeneous media suffers from significant lateral and
contrast resolution losses due to the defocusing effects of the inhomogeneities. The losses …

Nonlinear and thermoviscous phenomena in acoustics, Part II

S Makarov, M Ochmann - Acta Acustica united with Acustica, 1997 - ingentaconnect.com
The present paper is intended as a review (over 300 Refs.) of some basic concepts and
modern investigations of nonlinear and thermoviscous phenomena in acoustic fields in …

Optimal selection of parameters for the angular spectrum approach to numerically evaluate acoustic fields

P Wu, R Kazys, T Stepinski - The Journal of the Acoustical Society of …, 1997 - pubs.aip.org
Optimal selection of parameters is presented for the angular spectrum approach (ASA) to the
numerical calculation of acoustic fields radiated by planar transducers and linear arrays with …

Increased off-axis energy deposition due to diffraction and nonlinear propagation of ultrasound from rectangular sources

MD Cahill, AC Baker - The Journal of the Acoustical Society of …, 1997 - pubs.aip.org
An existing model, the Bergen code, is used to simulate the propagation of ultrasonic beams
of finite amplitude, due to rectangular and square sources. It is found that the edges of the …

Suppression of propagating second harmonic in non-linear imaging

S Krishnan, JD Hamilton… - 1997 IEEE Ultrasonics …, 1997 - ieeexplore.ieee.org
Harmonic imaging can improve contrast between contrast agents and tissue when imaging
microvasculature. However, the factor limiting contrast enhancement is harmonic signals …