Dr. Wilson runs one of the most advanced and well - known clinical and research facilities for the investigation of microbubble contrast agents for medical imaging in North America, recognized for its accomplishments throughout the world. (ucalgary.ca)
Echography with microbubbles uses the fact that the bubbles will vibrate in the blood at the same frequency as the sound produced by the echoscanner, as well as at twice that frequency; the so - called second harmonic. (sciencedaily.com)
However, more recent research modelling the impacts of using microbubbles to address global warming found that the technique would not affect ocean primary productivity, a measure of the activity of primary producers. (carbonbrief.org)