Efficient generation of cavitation cloud by dual-frequency ultrasound exposure in optically transparent gel

Jun Yasuda, Ayumu Asai, Shin Yoshizawa, Shin Ichiro Umemura

研究成果: Conference contribution

抄録

Cavitation bubbles are known to enhance HIFU treatment. To generate them at a high efficiency, ultrasound waveforms emphasizing either positive or negative pressure were synthesized by superimposing the second harmonic onto the fundamental and combined in an exposure sequence. In this study, four different types of sequences were compared. Negative-pressure emphasized waves immediately followed by positive-pressure emphasized waves resulted in the highest efficiency. The pressure-release surfaces provided by the cavitation bubbles generated by the former waves may have converted the latter waves to highly negative-pressure emphasized waves.

本文言語English
ホスト出版物のタイトル2012 IEEE International Ultrasonics Symposium, IUS 2012
ページ2607-2610
ページ数4
DOI
出版ステータスPublished - 2012 12 1
イベント2012 IEEE International Ultrasonics Symposium, IUS 2012 - Dresden, Germany
継続期間: 2012 10 72012 10 10

出版物シリーズ

名前IEEE International Ultrasonics Symposium, IUS
ISSN(印刷版)1948-5719
ISSN(電子版)1948-5727

Other

Other2012 IEEE International Ultrasonics Symposium, IUS 2012
国/地域Germany
CityDresden
Period12/10/712/10/10

ASJC Scopus subject areas

  • 音響学および超音波学

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