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Paper Abstract and Keywords
Presentation 2025-10-22 14:05
Comparison of ultrasound images of HIFU-induced cavitation bubbles enhanced by superimposing focused ultrasound pulses and high-speed camera images of cavitation bubbles
Kensuke Ito, Shohei Mori (Tohoku Univ.), Shin Yoshizawa (Tohoku Univ./SONIRE Therapeutics) US2025-35
Abstract (in Japanese) (See Japanese page) 
(in English) Cavitation bubbles can improve treatment efficacy in high-intensity focused ultrasound (HIFU) thermal therapy through their heating enhancement effects. To utilize these thermal effects efficiently, the bubble generation location must be properly controlled. We propose a method for highly sensitive imaging of cavitation bubbles by superimposing focused pulses from the HIFU transducer onto imaging pulses. This study evaluates the accuracy of bubble distributions obtained by the proposed method by comparing it with optical measurements using a high-speed camera. Specifically, it examines the effect of the pressure of the superimposed focused pulse on the brightness distribution in the depth direction of the ultrasound image. Furthermore, to reduce side lobes in the lateral direction, the coherence factor is applied to the proposed method, and its effectiveness is also investigated.
Keyword (in Japanese) (See Japanese page) 
(in English) HIFU / Cavitation / Bubble imaging / Coherence factor / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 207, US2025-35, pp. 10-13, Oct. 2025.
Paper # US2025-35 
Date of Issue 2025-10-15 (US) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF US2025-35

Conference Information
Committee US  
Conference Date 2025-10-22 - 2025-10-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photoacoustics, Ultrasound in medicine, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2025-10-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparison of ultrasound images of HIFU-induced cavitation bubbles enhanced by superimposing focused ultrasound pulses and high-speed camera images of cavitation bubbles 
Sub Title (in English)  
Keyword(1) HIFU  
Keyword(2) Cavitation  
Keyword(3) Bubble imaging  
Keyword(4) Coherence factor  
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1st Author's Name Kensuke Ito  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Shohei Mori  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Shin Yoshizawa  
3rd Author's Affiliation Tohoku University/SONIRE Therapeutics (Tohoku Univ./SONIRE Therapeutics)
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Speaker Author-1 
Date Time 2025-10-22 14:05:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2025-35 
Volume (vol) vol.125 
Number (no) no.207 
Page pp.10-13 
#Pages 4 
Date of Issue 2025-10-15 (US) 

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