Coagulation of Large Regions by Creating Multiple Cavitation Clouds for High Intensity Focused Ultrasound Treatment
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概要
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High-Intensity focused ultrasound (HIFU) is attracting attention as a minimally invasive therapeutic modality. However, it has a problem of a long treatment time. To improve its treatment throughput, we developed a method of coagulating a large region at one time utilizing multiple clouds of cavitation. It is known that acoustic cavitation generated in the focal region of HIFU enhances tissue heating. In the experiment in this study, the focal distance was changed using an annular array transducer. Cavitation clouds were generated at three positions within a fraction of a second by high-intensity ultrasound pulses. The tissues in the vicinity of the cavitation clouds were coagulated simultaneously with non-spherically focused ultrasound waves at a relatively low intensity. The result suggests that the HIFU treatment time is significantly shortened by employing the proposed method.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2010-07-25
著者
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Umemura Shin-ichiro
Graduate School of Bioengineering, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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Yoshizawa Shin
Graduate School of Engineering, Tohoku University, Sendai 980-5879, Japan
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Inaba Yuta
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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