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Nonlinear ultrasound imaging of the microcirculation
The Journal of the Acoustical Society of America, 2023Blood flow at and near the tissue level is a physiological parameter of significant experimental and clinical importance, as it reflects the adaptive response of organs to their normal biological environment, to disease, trauma, and the malignant progression of cancer.
Matthew Bruce +3 more
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High frequency ultrasound nonlinear scattering from porphyrin nanobubbles
Ultrasonics, 2021Emerging contrast imaging studies have highlighted the potential of nanobubbles for both intravascular and extravascular applications. Reports to date on nanobubbles have generally utilized low frequencies (109 mL-1), and B-mode or contrast-mode on preclinical and clinical systems.
Carly, Pellow +5 more
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EVALUATING REBAR CORROSION USING NONLINEAR ULTRASOUND
AIP Conference Proceedings, 2008The early detection of rebar corrosion in reinforced concrete is difficult using current methods. This pilot study investigated the viability of using nonlinear ultrasound to detect the effects of rebar corrosion in its early stages. The study utilized three accelerated corrosion specimens and one control specimen.
Clinton Woodward +3 more
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Nonlinear simulation for contrast ultrasound imaging
The Journal of the Acoustical Society of AmericaContrast ultrasound (CUS) has received much interest because of its sensitivity enhancement for blood flow imaging. However, there is still a lack of nonlinear simulation method for CUS, as conventional simulators cannot deal with the microbubble acoustic nonlinearity.
Shuangyi Cheng, Kailiang Xu
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Diagnosis of osteoporosis using nonlinear ultrasound
IEEE Symposium on Ultrasonics, 2003, 2004Our aim is to diagnose osteoporosis by using nonlinear acoustics to detect microscopic cracks in human bone. We constructed a system to measure 2nd harmonic generation in human heel bone, where special care was taken to suppress 2nd harmonics generated in the electronics.
L. Hoff +3 more
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Beam-forming for nonlinear ultrasound inversion
jiip, 2002Abstract - Common models in ultrasound inversion are based on the assumption that the inspected tissue consists of point scatterers and the spatial responses of the single point scatterers do not interfere. These models offer an efficient way to recover reflection coefficients of point scatterers.
Kowar, R., Scherzer, O.
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Nonlinear acoustics in biomedical ultrasound
AIP Conference Proceedings, 2015Ultrasound is widely used to image inside the body; it is also used therapeutically to treat certain medical conditions. In both imaging and therapy applications the amplitudes employed in biomedical ultrasound are often high enough that nonlinear acoustic effects are present in the propagation: the effects have the potential to be advantageous in some
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Nonlinear Ultrasound Radiation-Force Elastography
2009“Elastography” or “elasticity imaging” can be defined as the science and methodology of estimating the mechanical properties of a medium (including soft tissue). In this chapter, an overview of elastography and its relation to tissue pathology will be presented.
Alexia Giannoula, Richard S.C. Cobbold
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MEASURING RESIDUAL STRESS USING NONLINEAR ULTRASOUND
AIP Conference Proceedings, 2010Near‐surface compressive residual stresses, which are generated by shot peening, are known to retard crack initiation and thus extend the fatigue life of a metal component. The ability to effectively measure these near‐surface residual stresses would greatly help predict the fatigue life of shot‐peened components.
M. Liu +5 more
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Full-wave modeling of therapeutic ultrasound: Nonlinear ultrasound propagation in ideal fluids
The Journal of the Acoustical Society of America, 2002The number of applications of high-intense, focused ultrasound for therapeutic purposes is growing. Besides established applications like lithotripsy, new applications like ultrasound in orthopedics or for the treatment of tumors arise. Therefore, new devices have to be developed which provide pressure waveforms and distributions in the focal zone ...
Ginter, Siegfried +4 more
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