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Paper Abstract and Keywords
Presentation 2017-05-22 13:30
Fundamental study of high-resolution acoustic impedance analysis for soft tissue
Tamaki Honda, Kazuyo Ito, Kenji Yoshida, Tadashi Yamaguchi (Chiba Univ.) US2017-14
Abstract (in Japanese) (See Japanese page) 
(in English) Evaluation of acoustic properties of tissue in microscopic region leads to understanding the relationship between echo signal and microstructure in ultrasound tissue characterization. This report demonstrates the analysis of the specific acoustic impedance of rat liver (nomal model, fatty model and cirrhotic model) using a scanning acoustic microscopy with 250 MHz transducer with a resolution of 7 μm. As a result, the texture that seems to be the structure like hepatocytes and lipid droplets were observed in acoustic impedance map in case of 250 MHz ultrasound. There were more clear compared with the result of 60 MHz ultrasound with a resolution of 20 μm. However, it was difficult to know the acoustic impedance of each tissue of the organelles.
Keyword (in Japanese) (See Japanese page) 
(in English) Bio-acoustic microscopy / Acoustic impedance / Liver / Fiber / Fat droplet / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 41, US2017-14, pp. 1-5, May 2017.
Paper # US2017-14 
Date of Issue 2017-05-15 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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)
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Conference Information
Committee US  
Conference Date 2017-05-22 - 2017-05-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To US 
Conference Code 2017-05-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fundamental study of high-resolution acoustic impedance analysis for soft tissue 
Sub Title (in English)  
Keyword(1) Bio-acoustic microscopy  
Keyword(2) Acoustic impedance  
Keyword(3) Liver  
Keyword(4) Fiber  
Keyword(5) Fat droplet  
1st Author's Name Tamaki Honda  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Kazuyo Ito  
2nd Author's Affiliation Chiba University (Chiba Univ.)
3rd Author's Name Kenji Yoshida  
3rd Author's Affiliation Chiba University (Chiba Univ.)
4th Author's Name Tadashi Yamaguchi  
4th Author's Affiliation Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2017-05-22 13:30:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2017-14 
Volume (vol) vol.117 
Number (no) no.41 
Page pp.1-5 
Date of Issue 2017-05-15 (US) 

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