Reduction of cavitation using pseudorandom signals [therapeutic US]

  title={Reduction of cavitation using pseudorandom signals [therapeutic US]},
  author={J. Y. Chapelon and F. Dupenloup and H. Cohen and Patrick R N Lenz},
  journal={IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
It is known that the scattering of ultrasound by cavitation bubbles reduces the efficiency of treatment by high-intensity focused ultrasound. In the authors' experiments striving to reduce grating lobe levels of annular arrays they observed less microbubble formation at the focus of the transducer when pseudorandom phase-modulated CW signals were used rather than single-frequency CW signals. To confirm this unexpected result, the authors performed an experiment in a solution of luminol which is… CONTINUE READING


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