Results 21 to 30 of about 19,521 (265)

Fragmentation thresholds simulated for antibubbles with various infinitesimal elastic shells

Current Directions in Biomedical Engineering, 2022
Antibubbles are small gas bubbles comprising one or multiple liquid or solid cores, typically surrounded by stabilising shells. Acoustically active microscopic antibubbles have been proposed for use as theranostic agents.
Anderton Nicole, Postema Michiel
doaj   +1 more source

Transcranial focused ultrasound-induced blood‒brain barrier opening in mice without shaving hairs

Scientific Reports, 2023
Acoustic coupling through hairs remains a challenge to performing transcranial-focused ultrasound procedures. Here, we demonstrated that this challenge could be addressed by using oil as the coupling medium, leveraging oil's high affinity to hairs due to
Lu Xu, Yan Gong, Chih-Yen Chien, Eric Leuthardt, Hong Chen   +4 more
doaj   +1 more source

Phase-Shift, Targeted Nanoparticles for Ultrasound Molecular Imaging by Low Intensity Focused Ultrasound Irradiation [Retraction]

International Journal of Nanomedicine, 2022
Li M, Luo H, Zhang W, et al. Int J Nanomedicine. 2018;13:3907–3920. The Editor and Publisher of International Journal of Nanomedicine wish to retract the published article.
Li M, Luo H, Zhang W, He K, Chen Y, Liu J, Chen J, Wang D, Hao L, Ran H, Zheng Y, Wang Z, Li P   +12 more
doaj  

Guiding and monitoring focused ultrasound mediated blood–brain barrier opening in rats using power Doppler imaging and passive acoustic mapping

Scientific Reports, 2022
The blood–brain barrier (BBB) prevents harmful toxins from entering brain but can also inhibit therapeutic molecules designed to treat neurodegenerative diseases.
Aparna Singh, Jiro Kusunose, M. Anthony Phipps, Feng Wang, Li Min Chen, Charles F. Caskey   +5 more
doaj   +1 more source

Acoustic Characterization of the CLINIcell for Ultrasound Contrast Agent Studies [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2019
Ultrasound contrast agents consist of gas-filled coated microbubbles that oscillate upon ultrasound insonification. Their characteristic oscillatory response provides contrast enhancement for imaging and has the potential to locally enhance drug delivery.
Ines Beekers, Tom van Rooij, Antonius F. W. van der Steen, Nico de Jong, Martin D. Verweij, Klazina Kooiman   +5 more
openaire   +4 more sources

Effects of Shell Encapsulation on the Nonlinear Dynamics of a Microbubble Contrast Agent subjected to Acoustic Energy

MATEC Web of Conferences, 2018
The effects of encapsulating a microbubble on the energy in oscillation and acoustic signature is investigated by solving the governing equations of motion. Numerical data obtained by solving these equations is used to explore the effects of shell on the
Dzaharudin Fatimah, Ali Najihah Mohd, Alias Erny Afiza, Jamaludin Ummu Kulthum   +3 more
doaj   +1 more source

Preparation and Ultrasonic Imaging Investigation of Perfluoropentane-Filled Polylactic Acid Nanobubbles As a Novel Targeted Ultrasound Contrast Agent

Frontiers in Materials, 2020
In the study reported here, polylactic acid (PLLA) polymer was synthesized using stannous octoate (Sn(Oct)2) and N-(t-butoxycarbonyl) ethanolamine (EABoc) as the catalyst and the initiator, respectively.
Ruolei Xiao, Zhiwei Zhao, Jiajuan Chen, Liu He, Huili Wang, Lingping Huang, Binhua Luo   +6 more
doaj   +1 more source

The correlation between HER-2 expression and the CEUS and ARFI characteristics of breast cancer. [PDF]

PLoS ONE, 2017
The purpose of the present study was to explore the correlation between the contrast-enhanced ultrasound (CEUS) and acoustic radiation force impulse (ARFI) characteristics of breast cancers and the expression of human epidermal growth factor receptor 2 ...
Xiao-Yan Wang, Qiao Hu, Meng-Yuan Fang, Yan He, Hai-Ming Wei, Xue-Xue Chen, Bing Zhang   +6 more
doaj   +1 more source

Ultrasound contrast agents : optical and acoustical characterization [PDF]

, 2009
This thesis describes the characterization of the dynamics and the acoustic responses of single BR14 (Bracco Research S.A., Geneva, Switzerland) ultra- sound contrast agent microbubbles under the in°uence of ultrasound. In Ch. 2 of this thesis we investigate the small amplitude behavior of isolated microbubbles acoustically. To ensure that the measured
openaire   +2 more sources

A hybrid GNA instability

Scientific Reports, 2022
A semi-analytic admixed model formalism to study the stability effects of the inner crust regions against the local collective perturbations in non-rotating neutron stars is proposed.
Pralay Kumar Karmakar, Dhrubajit Kalita, Ahmed Atteya   +2 more
doaj   +1 more source