A review of phospholipid encapsulated ultrasound contrast agent microbubble physics

B Helfield - Ultrasound in medicine & biology, 2019 - Elsevier
Ultrasound contrast agent microbubbles have expanded the utility of biomedical ultrasound
from anatomic imaging to the assessment of microvascular blood flow characteristics and …

[HTML][HTML] Probing the pressure dependence of sound speed and attenuation in bubbly media: Experimental observations, a theoretical model and numerical …

AJ Sojahrood, Q Li, H Haghi, R Karshafian… - Ultrasonics …, 2023 - Elsevier
The problem of attenuation and sound speed of bubbly media has remained partially
unsolved. Comprehensive data regarding pressure-dependent changes of the attenuation …

Classification of the major nonlinear regimes of oscillations, oscillation properties, and mechanisms of wave energy dissipation in the nonlinear oscillations of coated …

AJ Sojahrood, H Haghi, R Karshafian, MC Kolios - Physics of Fluids, 2021 - pubs.aip.org
Acoustic waves are dissipated when they pass through bubbly media. Dissipation by
bubbles takes place through thermal damping (Td), radiation damping (Rd), and damping …

[HTML][HTML] Nonlinear dynamics and bifurcation structure of ultrasonically excited lipid coated microbubbles

AJ Sojahrood, H Haghi, R Karshafian… - Ultrasonics Sonochemistry, 2021 - Elsevier
In many applications, microbubbles (MBs) are encapsulated by a lipid coating to increase
their stability. However, the complex behavior of the lipid coating including buckling and …

Spherical oscillations of encapsulated microbubbles: Effect of shell compressibility and anisotropy

G Chabouh, B Dollet, C Quilliet… - The Journal of the …, 2021 - pubs.aip.org
We introduce a model that describes spherical oscillations of encapsulated microbubbles in
an unbounded surrounding fluid. A Rayleigh–Plesset-like equation is derived by coupling …

Experimental and numerical evidence of intensified non-linearity at the microscale: The lipid coated acoustic bubble

AJ Sojahrood, H Haghi, TM Porter, R Karshafian… - Physics of …, 2021 - pubs.aip.org
A lipid coated bubble (LCB) oscillator is a very interesting non-smooth oscillator with many
important applications ranging from industry and chemistry to medicine. However, due to the …

Ultrasound molecular imaging-guided tumor gene therapy through dual-targeted cationic microbubbles

Y Liu, Y Zhou, J Xu, H Luo, Y Zhu, X Zeng… - Biomaterials …, 2021 - pubs.rsc.org
The success of gene therapy depends largely on the development of gene vectors and
effective gene delivery systems. It has been demonstrated that cationic microbubbles can be …

[HTML][HTML] Critical corrections to models of nonlinear power dissipation of ultrasonically excited bubbles

AJ Sojahrood, H Haghi, R Karshafian… - Ultrasonics …, 2020 - Elsevier
Current models for calculating nonlinear power dissipation during the oscillations of
acoustically excited bubbles generate non-physical values for the radiation damping (D rd) …

Fluid flow influences ultrasound-assisted endothelial membrane permeabilization and calcium flux

E Memari, F Hui, H Yusefi… - Journal of Ophthalmology …, 2023 - journals.lww.com
The local fluid dynamics experienced by circulating microbubbles vary across different
anatomical sites, which can influence ultrasound-mediated therapeutic delivery efficacy …

High frequency ultrasound nonlinear scattering from porphyrin nanobubbles

C Pellow, J Tan, E Chérin, CEM Demore, G Zheng… - Ultrasonics, 2021 - Elsevier
Emerging contrast imaging studies have highlighted the potential of nanobubbles for both
intravascular and extravascular applications. Reports to date on nanobubbles have …