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Paper Abstract and Keywords
Presentation 2012-02-23 11:25
Filtering for Reduction of Speckle Noise in the Ultrasonography
Sho Kageyama, Hideyuki Hasegawa, Hiroshi Kanai (Tohoku Univ.) US2011-107
Abstract (in Japanese) (See Japanese page) 
(in English) In conventional ultrasonic diagnostic equipment, ultrasonic images are composed of amplitudes of received ultrasonic echoes, and it is known that the image quality is degraded by speckle noise. In the present study, the point spread function of ultrasonic diagnostic equipment is investigated as a source of speckle noise and speckle reduction filter was developed by referring to an echo from a point scatterer (fine wire of 13 µm in diameter), which was measured by a 10-MHz linear-type ultrasonic probe equipped to ultrasonic diagnostic equipment (Aloka, SSD-6500). The developed speckle reduction filter is based on the Wiener filter, which controls the effect of the filter using the signal-to-noise ratio (SNR) of a received signal. In the basic experiment, the bandwidth of an echo from a silicone plate mimicking soft tissue was broadened resulting 35.4% reduction of the pulse length. This result shows the possibility of the developed filter for improvement spatial resolution in ultrasonography.
Keyword (in Japanese) (See Japanese page) 
(in English) Speckle Noise / Point Spread Function / Wiener Filter / Frequency Spectrum / Spatial Resolution / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 443, US2011-107, pp. 17-21, Feb. 2012.
Paper # US2011-107 
Date of Issue 2012-02-16 (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 US2011-107

Conference Information
Committee US  
Conference Date 2012-02-23 - 2012-02-23 
Place (in Japanese) (See Japanese page) 
Place (in English) GE Healthcare Japan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Acoustic Imaging, General, etc 
Paper Information
Registration To US 
Conference Code 2012-02-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Filtering for Reduction of Speckle Noise in the Ultrasonography 
Sub Title (in English)  
Keyword(1) Speckle Noise  
Keyword(2) Point Spread Function  
Keyword(3) Wiener Filter  
Keyword(4) Frequency Spectrum  
Keyword(5) Spatial Resolution  
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Keyword(7)  
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1st Author's Name Sho Kageyama  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Hideyuki Hasegawa  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Hiroshi Kanai  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2012-02-23 11:25:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2011-107 
Volume (vol) vol.111 
Number (no) no.443 
Page pp.17-21 
#Pages 5 
Date of Issue 2012-02-16 (US) 

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