Monitoring of lesions induced by cavitation-enhanced high-intensity focused ultrasound using shear wave elastography

Ryosuke Iwasaki, Ryo Nagaoka, Yoshifumi Saijo, Shin Ichiro Umemura, Ryo Takagi, Hayato Jimbo, Shin Yoshizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Shear wave elastography is expected as a noninvasive monitoring method in high-intensity focused ultrasound treatment. Since elastography is usually applied to detect a lesion near a superficial layer, it is challenging to induce and propagate shear waves in deep tissue. Acoustic cavitation bubbles have the potential to promote the efficiency of the treatment; however the presence of remaining microbubbles may interfere with the shear wave propagation and make the detection of the accompanying displacements difficult. In this paper, it is examined whether the detection of the region where increased shear wave propagation velocity in ex vivo tissue is possible even in the presence of microbubbles and 'HIFU push' shear wave elastography has the advantage in terms of shear wave induction in deep tissue compared with a conventional technique by irradiating push beams from the same therapeutic transducer as HIFU exposure.

Original languageEnglish
Title of host publication2015 IEEE International Ultrasonics Symposium, IUS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479981823
DOIs
Publication statusPublished - 2015 Nov 13
EventIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
Duration: 2015 Oct 212015 Oct 24

Publication series

Name2015 IEEE International Ultrasonics Symposium, IUS 2015

Other

OtherIEEE International Ultrasonics Symposium, IUS 2015
CountryTaiwan, Province of China
CityTaipei
Period15/10/2115/10/24

Keywords

  • HIFU
  • SWE
  • cavitation enhanced heating
  • coagulation detection
  • shear wave penetration
  • ultrasound imaging

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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