Effect of matching layer on acoustic lens on suppressing lamb wave formation

Jun Kubota, Takashi Azuma, Kazunari Ishida, Megumi Motoyama, Yutaka Sato, Kazuaki Sasaki, Ken Ichi Kawabata, Narendra T. Sanghvi, Shinichiro Umemura

研究成果: Conference article査読


Therapeutic variable focal length ultrasound transducer (VFLT) for HIFU using linear array and cylindrical lens with low-loss matching layer in front for suppressing Lamb wave has been developed. The cylindrical lens with a thickness of approximately half a wavelength, directly attached to PZT transducer on the other side, has an acoustic matching layer. Numerical simulation of wave propagation was performed using a finite element method. Prototype VFLT with and without the layer were then fabricated and tested. The comparison of the results clearly showed the effect of the layer to suppress Lamb wave formation in the lens. Canine prostate was transrectally treated and successfully coagulated with the transducer with a Lamb wave suppressing matching layer (LWSL) on the lens.

ジャーナルProceedings of the IEEE Ultrasonics Symposium
出版ステータスPublished - 2003 12 1
イベント2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States
継続期間: 2003 10 52003 10 8

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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