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Paper Abstract and Keywords
Presentation 2017-06-27 14:20
Estimation of transmit-receive response and its application to method for improvement of range spatial resolution
Michiya Mozumi, Hideyuki Hasegawa (Univ. of Toyama) US2017-23
Abstract (in Japanese) (See Japanese page) 
(in English) The range spatial resolution is one of the elements which is related to an image quality in the ultrasonic imaging. We developed a filter based on the maximum likelihood (ML) estimation of the distribution of ultrasonic scattering strength for improvement of the range spatial resolution of a B-mode image. Although the range spatial resolution was improved by using the proposed ML filter, its performance might depend on the propagation medium of an imaging target. The goal of this study is the improvement of the performance of the proposed filter in terms of the range spatial resolution and the penetration. In the present study, the transmit-receive response of an ultrasound imaging system, which is included in a discrete echo signal model, was estimated using echo signals obtained from an imaging target. In addition, transmit-receive responses were computed region by region in the range direction to consider the change in the ultrasonic waveform due to the frequency dependent attenuation of the propagation medium. The estimated transmit-receive response was used for the corresponding region. The performance of the proposed method was evaluated by comparing a B-mode image of a phantom obtained with the proposed method to that obtained with the conventional method. The results showed that the axial half maximum of an echo from a fine wire was smaller than that obtained with the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasound / range spatial resolution / maximum-likelihood estimation / scattering strength / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 111, US2017-23, pp. 13-17, June 2017.
Paper # US2017-23 
Date of Issue 2017-06-20 (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 2017-06-27 - 2017-06-27 
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Paper Information
Registration To US 
Conference Code 2017-06-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of transmit-receive response and its application to method for improvement of range spatial resolution 
Sub Title (in English)  
Keyword(1) ultrasound  
Keyword(2) range spatial resolution  
Keyword(3) maximum-likelihood estimation  
Keyword(4) scattering strength  
1st Author's Name Michiya Mozumi  
1st Author's Affiliation University of Toyama (Univ. of Toyama)
2nd Author's Name Hideyuki Hasegawa  
2nd Author's Affiliation University of Toyama (Univ. of Toyama)
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Speaker Author-1 
Date Time 2017-06-27 14:20:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2017-23 
Volume (vol) vol.117 
Number (no) no.111 
Page pp.13-17 
Date of Issue 2017-06-20 (US) 

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