microbubble


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microbubble

(mī'krō-buhb'bel),
A vascular contrast material for ultrasound, air stabilized within some kind of membrane, such as a surfactant, like a tiny soap bubble, which gives marked reflections of the signal at higher harmonic frequencies; the size (1-7 mcm) works well in the useful diagnostic frequency range of ultrasound (2-10 Hz).
See also: pulse-inversion contrast harmonic imaging.
References in periodicals archive ?
Researchers found that microbubbles conjugated to streptavidin can be coupled to the surface of a cell, where mechanosensitive Piezo1 ion channels are expressed.
CEUS performed with the use of a microbubble contrast agent may be a potentially useful adjunct in assessing thyroid nodules, since it has a high specificity of 84.
Contrast-enhanced-EUS (CE-EUS) detects signals from microbubbles produced by intravenously administered contrast agents and filters signals originating from tissues, by selectively detecting harmonic components.
He took his fascination with bubbles, and in the 1980s developed the microbubble flotation process, a term he coined to advocate the use of small air bubbles to separate fine coal from mineral matter and recover the valuable energy resource better.
Even though cavitation processes are well known to be stochastic in nature, with the further complication of encapsulated UCAs, intrinsic variations in microbubble shell uniformity may also be a factor, especially for the process of sonic cracking.
Microbubble potentiated ultrasound as a method of declotting thrombosed dialysis grafts: experimental study in dogs.
Definity (perflutren lipid microspheres, Lantheus Medical Imaging, Billerica, MA), an FDA approved commercially available ultrasound microbubble contrast agent, was used in this study.
A microbubble ultrasound contrast agent is widely used as contrast media in ultrasonography, yet it is acts as a cavitation nuclei or enhancer.
Three ml cell culture media (fresh RPMI-1640 with 10% FBS) containing 5% (v/v) of the microbubble contrast agent-Sonovue (Bracco International B.
The most important limitations are the size of the microbubble and the length of time for which a microbubble will exist before dissolving into the solution.