Results 11 to 20 of about 51,778 (325)

High-speed optical observations of asymmetric pulsations of microbubbles released from tablet matrix

Current Directions in Biomedical Engineering, 2023
Microbubbles with a negligible shell are of utmost importance in the study of harmonic ultrasound contrast agents. The purpose of this study was to collect and quantify experimental pulsation footage of gas microbubbles released from tablet matrix under ...
Anderton Nicole, Carlson Craig S., Xinyue Hu, Otake Naoyuki, Sorjonen Joona, Kudo Nobuki, Ketolainen Jarkko, Postema Michiel   +7 more
doaj   +1 more source

Nonspherical ultrasound microbubbles

Proceedings of the National Academy of Sciences, 2023
Surface tension provides microbubbles (MB) with a perfect spherical shape. Here, we demonstrate that MB can be engineered to be nonspherical, endowing them with unique features for biomedical applications. Anisotropic MB were generated via one-dimensionally stretching spherical poly(butyl cyanoacrylate) MB above their glass transition temperature ...
Dasgupta, Anshuman, Sun, Tao, Palomba, Roberto, Rama, Elena, Zhang, Yongzhi, Power, Chanikarn, Moeckel, Diana, Liu, Mengjiao, Sarode, Apoorva, Weiler, Marek, Motta, Alessandro, Porte, Céline, Magnuska, Zuzanna, Said Elshafei, Asmaa, Barmin, Roman, Graham, Adam, McClelland, Arthur, Rommel, Dirk, Stickeler, Elmar, Kiessling, Fabian, Pallares, Roger M., De Laporte, Laura, Decuzzi, Paolo, McDannold, Nathan, Mitragotri, Samir, Lammers, Twan   +25 more
openaire   +2 more sources

Reversal of aging-induced increases in aortic stiffness by targeting cytoskeletal protein-protein interfaces [PDF]

, 2018
Background: The proximal aorta normally functions as a critical shock absorber that protects small downstream vessels from damage by pressure and flow pulsatility generated by the heart during systole.
AortaGen Consortium, the, Bekaert, Sofie, Chiu, Joanna G, De Backer, Gui, De Bacquer, Dirk, De Buyzere, Marc, De Meyer, Tim, Gao, Yuan Z, Gillebert, Thierry, Leavis, Paul, Li, Qian, Mitchell, GF, Morgan, Kathleen G, Nicholson, Christopher J, Porter, Tyrone, Rietzschel, Ernst, Saphirstein, Robert J, Segers, Patrick, Singh, Kuldeep, Van Bortel, Lucas, Verwoert, Germaine C   +20 more
core   +5 more sources

Ultrasound localization microscopy to image and assess microvasculature in a rat kidney. [PDF]

, 2017
The recent development of ultrasound localization microscopy, where individual microbubbles (contrast agents) are detected and tracked within the vasculature, provides new opportunities for imaging the vasculature of entire organs with a spatial ...
Ferrara, Katherine W, Foiret, Josquin, Ilovitsh, Tali, Mahakian, Lisa, Tam, Sarah, Zhang, Hua   +5 more
core   +3 more sources

Effects Of Attenuation And Thrombus Age On The Success Of Ultrasound And Microbubble-Mediated Thrombus Dissolution [PDF]

, 2011
The purpose of this study was to examine the effects of applied mechanical index, incident angle, attenuation and thrombus age on the ability of 2-D vs. 3-D diagnostic ultrasound and microbubbles to dissolve thrombi.
Drvol, L. K., Everbach, E. Carr, Gao, S. J., Lof, J., Porter, T. R., Powers, J. E., Shi, W. T., Vignon, F., Xie, F.   +8 more
core   +3 more sources

Separation of chemically modified carbon nanotubes by surfactant free microbubble generation

AIP Advances, 2020
Bubble separation is a widely used and effective method for separating solids from liquids. In this study, we propose a method to generate roughly ∼104 microbubbles/μl in an ethanol–water solution (surfactant-free) by subjecting the container of the ...
Hsin-Chieh Lee, Yu-Ting Ciou, Hong-Ren Jiang   +2 more
doaj   +1 more source

Characterization of Direct Localization Algorithms for Ultrasound Super-Resolution Imaging in a Multibubble Environment: A Numerical and Experimental Study

IEEE Access, 2022
Localization plays a significant role in the production of ultrasound localization microscopy images. For instance, detecting more microbubbles reduces the time of acquisition, while localizing them more accurately improves the resolution of the images ...
Aline Xavier, Hector Alarcon, David Espindola   +2 more
doaj   +1 more source

Ultrasound assisted siRNA delivery using PEG-siPlex loaded microbubbles [PDF]

, 2008
Short interfering RNA (siRNA) attracts much attention for the treatment of various diseases. However, its delivery, especially via systemic routes, remains a challenge. Indeed, naked siRNAs are rapidly degraded, while complexed siRNAs massively aggregate
De Smedt, Stefaan, Demeester, Jo, Lentacker, Ine, Sanders, Niek, Vandenbroucke, Roosmarijn   +4 more
core   +1 more source

A Simulation for Detecting Nonlinear Echoes from Microbubbles Packets

Archives of Acoustics, 2014
This work presents a simulation of the response of packets of microbubbles in an ultrasonic pulse-echo scan line. Rayleigh-Plesset equation has been used to predict the echo from numerically obtained radial dynamics of microbubbles. Varying the number of
Mohamed Galal Sayed ALI, Nour Zaky ELSAYED, Ebtsam Ali EID   +2 more
doaj   +1 more source

Effect of Pulse Shaping on Subharmonic Aided Pressure Estimation In Vitro and In Vivo. [PDF]

, 2016
OBJECTIVES: Subharmonic imaging (SHI) is a technique that uses the nonlinear oscillations of microbubbles when exposed to ultrasound at high pressures transmitting at the fundamental frequency ie, f METHODS: Eight waveforms with different envelopes were ...
Dave, Jaydev K., Eisenbrey, John R., Forsberg, Flemming, Gupta, Ipshita, Hazard, Christopher, Li, Huiwen, Liu, Ji-Bin, Sridharan, Anush, Stanczak, Maria, Wallace, Kirk, Wang, Ping, Wang, Xinghua   +11 more
core   +2 more sources