Hydrodynamic cavitation is a major phase change phenomena that can occur with a sudden decrease in the local static pressure within a fluid. The emergence of microelectromechanical systems (MEMS) and high-speed microfluidic ...
Injecting drugs into the bloodstream can often harm healthy tissues as well. Drug delivery systems (DDSs) are an innovative solution designed to target specific cells and minimize such side effects. One strategy for drug ...
Bio & Medicine
Sep 21, 2023
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42
New research has shown how microbubbles carrying powerful cancer drugs can be guided to the site of a tumor using antibodies.
Bio & Medicine
Dec 8, 2020
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162
The lack of a clinically viable method to track and direct cancer drugs to tumors is a big problem for targeted therapeutics.
General Physics
Nov 12, 2019
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34
A team of researchers has produced a record-shattering underwater sound with an intensity that eclipses that of a rocket launch. The intensity was equivalent to directing the electrical power of an entire city onto a single ...
General Physics
May 17, 2019
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Severe oxygen deficiency eventually leads to cardiac arrest. If the blood's oxygen content cannot be rapidly re-established, the patient may die within minutes. In the journal Angewandte Chemie, American scientists have introduced ...
Materials Science
Jan 23, 2018
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27
A new technique developed at Caltech that uses gas-filled microbubbles for focusing light inside tissue could one day provide doctors with a minimally invasive way of destroying tumors with lasers, and lead to improved diagnostic ...
Optics & Photonics
Dec 2, 2015
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19
Researchers from North Carolina State University and the University of North Carolina at Chapel Hill have developed a new ultrasound device that could help identify arterial plaque that is at high risk of breaking off and ...
Engineering
Apr 24, 2014
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Ultrasound-stimulated microbubbles have been showing promise in recent years as a non-invasive way to break up dangerous blood clots. But though many researchers have studied the effectiveness of this technique, not much ...
General Physics
Dec 13, 2013
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(Medical Xpress)—Researchers are using computer simulations to investigate how ultrasound and tiny bubbles injected into the bloodstream might break up blood clots, limiting the damage caused by a stroke in its first hours.
General Physics
Sep 25, 2013
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Microbubbles are bubbles smaller than one millimetre in diameter, but larger than one micrometre. They are used in medical diagnostics as a contrast agent for ultrasound imaging. The gas-filled, e.g. air or perfluorocarbon, microbubbles oscillate and vibrate when a sonic energy field is applied and may reflect ultrasound waves. This distinguishes the microbubbles from surrounding tissues. In practice, because gas bubbles in liquid lack stability and would therefore quickly dissolve, microbubbles must be encapsulated with a solid shell. The shell is made from either a lipid or a protein such as Optison microbubbles which consist of perfluoropropane gas encapsulated by a serum albumin shell.
Microbubbles may also be used for drug delivery and water/waste water treatment purposes. .
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