Journal ArticleDOI
Nonlinear propagation in ultrasonic fields: measurements, modelling and harmonic imaging
TLDR
The results of a programme to study the nonlinear propagation in the fields of circular, focused and rectangular transducers are described, and comparisons made with numerical predictions obtained using a finite difference solution to the Khokhlov-Zabolotskaya-Kuznetsov equation are made.About:
This article is published in Ultrasonics.The article was published on 2000-03-01. It has received 122 citations till now. The article focuses on the topics: Ultrasonic sensor & Harmonics.read more
Citations
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Journal ArticleDOI
Nonlinear ultrasonic techniques for nondestructive assessment of micro damage in material: A review
TL;DR: In this paper, the authors reviewed the overall progress in nonlinear ultrasonic technique with the brief introduction of basic principle in the application of each nonlinear Ultrasonic phenomenon, including higher harmonic generation, subharmonic generation, nonlinear resonance, or mixed frequency response.
Journal ArticleDOI
Nonlinear acoustics in diagnostic ultrasound.
TL;DR: B/A has promise as a parameter for tissue characterisation, but methods for imaging B/A have shown limited success and nonlinear effects are of considerable importance during acoustic measurements, especially when these are used to predict in situ exposure.
Journal ArticleDOI
A heterogeneous nonlinear attenuating full- wave model of ultrasound
TL;DR: A mechanism of harmonic image quality improvement by showing that the harmonic point spread function is less sensitive to reverberation clutter is demonstrated, and a numerical solution of the relaxation attenuation laws that allows modeling of arbitrary frequency dependent attenuation is presented.
Journal ArticleDOI
Ultrasound image enhancement: A review
TL;DR: This paper classified these techniques for ultrasound enhancement into two groups: preprocessing and post-processing, analyzed their benefits and limitations, and presented beliefs about where ultrasound research could be directed to, in order to improve its effectiveness and broaden its applications.
Journal ArticleDOI
Modeling of nonlinear ultrasound propagation in tissue from array transducers
TL;DR: A computationally efficient model capable of simulating finite-amplitude ultrasound beam propagation in water and in tissue from phased linear arrays and other transducers of arbitrary quasiplanar geometry is described, based on a second-order operator splitting approach.
References
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Journal ArticleDOI
Finite amplitude distortion-based inhomogeneous pulse echo ultrasonic imaging
TL;DR: A novel pulse echo imaging scheme in which the image is formed using the finite amplitude distortion components of the received pulse is considered here, and the resulting potential of these higher harmonics to improve image resolution is investigated.
Journal ArticleDOI
Prediction of nonlinear acoustic effects at biomedical frequencies and intensities
T.G. Muir,Edwin L. Carstensen +1 more
TL;DR: The simplified results of several theoretical derivations are presented and employed in illustrative calculations and plots to ascertain the importance of nonlinear effects in applications involving plane waves, spherically diverging waves, and spheric converging waves.
Journal ArticleDOI
Nonlinear propagation applied to the improvement of resolution in diagnostic medical ultrasound
TL;DR: This work demonstrates the feasibility of nonlinear harmonic imaging in medical scanners using a simple broadband imaging arrangement in water using a 2.25-MHz circular transducer, membrane hydrophone, and polymer lens with a focal length of 262 mm.
Journal ArticleDOI
Distortion and harmonic generation in the nearfield of a finite amplitude sound beam
TL;DR: In this article, the distortion and harmonic generation in the near field of a finite amplitude sound beam are considered, assuming time-periodic but otherwise arbitrary on-source conditions, and the amplitude and phase of the fundamental and first few harmonics are calculated along the beam axis, and across the beam at various ranges from the source.
Proceedings ArticleDOI
A new imaging technique based on the nonlinear properties of tissues
TL;DR: In this paper, it is shown that the nonlinear properties of tissue are the major contribution of harmonic images, rather than the transmitted second harmonic energy, which has led to the widely held assumption that nonlinear distortion was not a significant factor in medical diagnostic imaging.