Detection of HIFU-induced coagulation by motion-compensated decorrelation of RF echo signals

Shin Ichiro Umemura, Ryo Matsuzawa, Takashi Shishitani, Shin Yoshizawa

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

Abstract

Correlation between the ultrasonic echoes has been used to detect the changes of the tissue during high-intensity focused ultrasound (HIFU) exposure, but it tends be lost when tissue coagulation has progressed. In this study, the loss of correlation itself is utilized to detect the tissue coagulation while compensating the local tissue motion. In the experiment with freshly excised and degassed porcine liver, localized decrease in correlation was observed at and around the HIFU focus. The area of decorrelation between each adjacent two frames, separated about 1 s, agreed well with the actual lesion.

Original languageEnglish
Title of host publication2012 IEEE International Ultrasonics Symposium, IUS 2012
Pages2611-2614
Number of pages4
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE International Ultrasonics Symposium, IUS 2012 - Dresden, Germany
Duration: 2012 Oct 72012 Oct 10

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2012 IEEE International Ultrasonics Symposium, IUS 2012
CountryGermany
CityDresden
Period12/10/712/10/10

Keywords

  • coagulation
  • correlation
  • high-intensity focused ultrasound (HIFU)
  • lesion detection

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Fingerprint Dive into the research topics of 'Detection of HIFU-induced coagulation by motion-compensated decorrelation of RF echo signals'. Together they form a unique fingerprint.

  • Cite this

    Umemura, S. I., Matsuzawa, R., Shishitani, T., & Yoshizawa, S. (2012). Detection of HIFU-induced coagulation by motion-compensated decorrelation of RF echo signals. In 2012 IEEE International Ultrasonics Symposium, IUS 2012 (pp. 2611-2614). [6562419] (IEEE International Ultrasonics Symposium, IUS). https://doi.org/10.1109/ULTSYM.2012.0654