Microbubble Cavitation
Microbubble Cavitation - Related Videos
08:24
Introduction to the Ultrasound Targeted Microbubble Destruction Technique
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Cited by 19 •
2011
Ultrasound Targeted Microbubble Destruction (UTMD) can be used to direct site-specific delivery of bioactive molecules, including therapeutic genes, to target organs accessible to ultrasound, such as the heart and liver1-6.
12:00
Synthesis of Gold Nanoparticle Integrated Photo-responsive Liposomes and Measurement of Their Microbubble Cavitation upon Pulse Laser Excitation
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Cited by 2 •
2016
This protocol describes a simple preparation method for gold nanoparticle integrated photo-responsive liposomes with the commercially available materials. It also shows how to measure the microbubble cavitation process of the synthesized liposomes upon the treatment of pulsed laser.
06:10
Injection of Microbubbles into Isolated Mouse Embryos: A Technique to Deliver Microbubble Contrast Agents into the Vasculature of Living Murine Embryos
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2025
This video demonstrates a procedure to inject microbubble contrast agents into an isolated late gestation stage mouse embryo. The microbubble contrast agent-based ultrasound imaging helps visualize and characterize the vascular environment of the embryo.
04:40
Focus Ultrasound Based Microbubble Mediated Blood-Brain Barrier Opening: A Technique to Create Localized Transient Openings in Blood-Brain Barrier of Mouse by Sonoporation
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2025
This video describes a method of temporarily disrupting the blood-brain barrier (BBB) by creating transient openings using microbubble-mediated focused ultrasound (FUS). These transient local BBB openings can eventually be used to deliver larger-sized drug molecules directly into the brain parenchyma.
14:22
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
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Cited by 6 •
2014
Acoustic cavitation in liquids submitted to power ultrasound creates transient extreme conditions inside the collapsing bubbles, which are the origin of unusual chemical reactivity and light emission, known as sonoluminescence. In the presence of noble gases, nonequilibrium plasma is formed. The "hot" particles and the photons generated by collapsing bubbles are able to excite species in solution.
FAQs
During ultrasound exposure, bubbles can expand and contract or collapse, transferring acoustic energy into localized fluid motion and shear stress. When this activity occurs near tumor cells or blood vessels, it can temporarily alter cell membranes and vascular barriers. These mechanical effects provide a physical basis for changing local transport without requiring uniform ultrasound exposure throughout surrounding tissue.
Bubble composition, ultrasound conditions, and targeting strategies are central variables. They influence how bubbles respond to the acoustic field, where mechanical effects occur, and how precisely tumor cells or vessels are affected. Cancer researchers therefore refine these factors together rather than treating cavitation as a fixed response, with the goal of improving therapeutic precision and evaluating safety.
Sonoporation refers to bubble-associated, transient changes in cell membrane permeability. Expansion, contraction, or collapse near tumor cells can generate mechanical forces that temporarily make membranes more permissive to externally supplied drugs or genetic materials. In cancer research, this effect is valuable because it may improve local delivery while the membrane changes remain associated with the treatment region.
The position of a bubble relative to tumor cells or blood vessels determines where fluid motion, shear stress, and permeability changes are concentrated. Effects near cells may influence membrane transport, whereas effects near vessels may alter vascular permeability. Targeting strategies aim to place these mechanical effects more selectively, helping limit unwanted exposure in surrounding tissue.
A typical study combines gas-filled microspheres, an acoustic ultrasound field, and a defined cancer-related target such as tumor cells or blood vessels. Researchers then examine bubble behavior and the resulting mechanical or permeability changes, often within an imaging-guided treatment framework. Outcomes can include altered delivery of drugs or genetic materials and evidence of localized treatment effects.
Researchers may investigate microbubble cavitation when they need to improve delivery of drugs or genetic materials to a tumor region. The technique can also support imaging-guided treatment by linking ultrasound exposure with localized bubble activity. Its relevance lies in combining delivery enhancement with the possibility of limiting effects on surrounding tissue, while researchers continue assessing precision and safety.
Safety studies must determine how bubble composition, ultrasound conditions, and targeting choices affect tissues beyond the intended tumor or vessel region. Because cavitation can change membranes and vascular permeability, researchers need to evaluate whether those effects remain localized and appropriately controlled. Ongoing work therefore focuses on refining treatment parameters while measuring therapeutic precision and potential effects on surrounding tissue.