Tiny bubbles made easier

By Chemistry World2017-05-10T14:10:00

Source: Royal Society of Chemistry

Shrinking the microbubbles needed for ultrasound with microfluidics

Researchers in Canada have shrunk bubbles to single-micrometre diameters, suitable for use in ultrasound.

Microbubbles are commonly used in ultrasound imaging as they improve the visual distinction between blood and surrounding tissues. Bubbles are injected intravenously, and under ultrasound they are excited at their resonant frequency. This resonance means they scatter a much higher proportion of the ultrasound than the surrounding tissues, allowing clear imaging of blood vessels.

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