Study of acoustic cavitation using NMR and MRI
University of New Brunswick
A very strong transducer was used to generate acoustic cavitation in a cuvette filled with water bubbled through with Freon-22. NMR and MRI were used to measure the cavitation and the diffusion of the gas, as well as the liquid. MRI is being used because it has advantages over other methods, such as optical and acoustic methods, due to the opacity of the media caused by the cavitation. It was found that the region of enhanced diffusion for the gas was away from the tip of the transducer, and the region of enhanced diffusion for the water was next to the tip. There were also T2 measurements, 2 and it was shown that there is some dependence of T2 on the acoustic cavitation.