Results 291 to 300 of about 29,238 (342)
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The Onset of Microbubble Vibration
Ultrasound in Medicine & Biology, 2007A linear relationship between the relative expansion of an off-resonance ultrasound contrast microbubble and low acoustic pressures is expected. In this study, high-speed optical recordings of individual phospholipid-coated microbubbles were used to investigate this relationship for microbubbles ranging from 2 to 11 microm and for acoustic pressures ...
Emmer, M. +3 more
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Microbubble intensification of bioprocessing
2020Microbubbles have been involved in industrial processing since the 1970s with the introduction of dissolved air flotation into common practice. The turn of the century saw microbubbles become regularly used in medical imaging. But in bioprocessing, only this decade has seen rapid advances in R&D, with some bioprocesses, particularly in wastewater ...
D J, Gilmour, W B, Zimmerman
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Microbubbles Reforming Endothelium
AIP Conference Proceedings, 2006Ultrasound contrast microbubbles have the ability to enhance cell permeability and thus may be used as a new way to deliver drugs inter-vascular. It facilitates the transfer of extracellular molecules into cells through ultrasound-activated microbubbles.
Van Wamel, Annemieke +6 more
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Interaction of Microbubbles with Ultrasound
Echocardiography, 1999The clinical need for bedside myocardial perfusion studies is obvious in the present era of revascularization. Animal and first clinical studies suggest that microbubbles can be used as intravascular tracers of perfusion in conjunction with echocardiography as an imaging modality.
Helene, Von Bibra +5 more
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Ultrasound, microbubbles, and thrombolysis
Progress in Cardiovascular Diseases, 2001Although dissolution of thrombus using ultrasound has been attempted for over 25 years, the clinical use of this technique remains limited. The ability of microbubbles to potentiate ultrasound-induced thrombolysis has renewed interest in this technique, which recanalizes occluded vessels without the need for fibrinolytic therapy.
T R, Porter, F, Xie
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Microbubbles for Medical Applications
2014Ultrasound contrast agent (UCA) suspensions contain encapsulated microbubbles with radii ranging from 1 to 10 micrometers. The bubbles oscillate to the driving ultrasound pulse generating harmonics of the driving ultrasound frequency. This feature allows for the discrimination of non-linear bubble echoes from linear tissue echoes facilitating the ...
Segers, T.J. +3 more
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The lung as a filter for microbubbles
Journal of Applied Physiology, 1979A new ultrasonic Doppler device has been used noninvasively over the femoral artery of anesthetized dogs to prove that it can detect carefully calibrated microbubbles of 14--189 micrometers diam when these are infused directly into the aorta. The same evaluated technique has then been employed to detect any bubbles escaping into the arterial system ...
B D, Butler, B A, Hills
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Therapeutic applications of microbubbles
European Journal of Radiology, 2002Microbubbles, currently used as contrast agents have potential therapeutic applications. Microbubbles, upon insonation of sufficiently intense ultrasound will cavitate. Cavitation with microbubbles can be used to dissolve blood clots or deliver drugs. Targeting ligands and drugs can be incorporated into microbubbles to make highly specific diagnostic ...
Evan C, Unger +5 more
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The microbubble or the microparticle?
Journal of Applied Physiology, 2011decompression sickness (DCS) has long been attributed to physical forces exerted by inert gas bubbles that may form in tissues, resulting in vascular occlusion and tissue disruption. Bubble formation occurs when a decrease in ambient pressure exceeds the rate at which soluble inert gas (e.g.,
Martha Sue Carraway, Nigel S. Key
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