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Paper Abstract and Keywords
Presentation 2013-06-24 13:00
Speckle reduction method based on independency of broadband echo signal
Ryunosuke Natsume, Tadashi Yamaguchi (Chiba Univ.) US2013-15
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, various methods has been studied in a ultrasonic diagnostic equipment for removing speckle noise included in the echo image and catching the detail of the amount and distribution of diseased tissue. In this study, we focus on independence between speckle noise included in the liver echo signal and the echo signal that reflected the biological tissue structures, and propose a speckle reduction method based on independent component analysis (ICA). In order to remove the speckle noise which is independent signal component from tissue structure, we virtually increase the observed signal by observing same liver using broadband probe by different frequency, and we applied this signals on ICA. The ICA separation results from clinical data of cirrhosis, two of “data only positive value” and “data with a value of both positive and negative” is obtained, and we have confirmed that the speckle noise is extracted to the former and the positive portion of the latter, fibrous structure is extracted to the negative portion of the latter. From this result, the possibility of a new speckle reduction method based on independence has been shown.
Keyword (in Japanese) (See Japanese page) 
(in English) Broadband echo signal / Independent component analysis / Speckle reduction / Hepatic fibrosis / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 107, US2013-15, pp. 1-5, June 2013.
Paper # US2013-15 
Date of Issue 2013-06-17 (US) 
ISSN Print edition: ISSN 0913-5685    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 US2013-15

Conference Information
Committee US  
Conference Date 2013-06-24 - 2013-06-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Inst. Indust. Sci, Univ. of Tokyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Ultrasonics in Medicine, Acoustic Imaging, General 
Paper Information
Registration To US 
Conference Code 2013-06-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Speckle reduction method based on independency of broadband echo signal 
Sub Title (in English)  
Keyword(1) Broadband echo signal  
Keyword(2) Independent component analysis  
Keyword(3) Speckle reduction  
Keyword(4) Hepatic fibrosis  
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1st Author's Name Ryunosuke Natsume  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Tadashi Yamaguchi  
2nd Author's Affiliation Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2013-06-24 13:00:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2013-15 
Volume (vol) vol.113 
Number (no) no.107 
Page pp.1-5 
#Pages 5 
Date of Issue 2013-06-17 (US) 

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