Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2011-02-21 10:10
Accuracy analysis of echo amplitude distribution model for fibrotic liver
Yu Igarashi (Tokyo Inst. of Tech.), Tadashi Yamaguchi (Chiba Univ.), Hiroyuki Hachiya (Tokyo Inst. of Tech.) US2010-113
Abstract (in Japanese) (See Japanese page) 
(in English) We have presented a new analysis method of the echo signal for the purpose of the quantitative estimation of the liver fibrosis. On the assumption that the echo signal from fibrotic liver is composed of reflected signals from normal and fibrotic tissues, we proposed the model in which the amplitude distribution of the echo signal is expressed by combining two Rayleigh distributions. Using this model, we are able to obtain the quantity and stage of fibrotic degeneration of liver from statistics of the echo amplitude as an inverse problem, and presented the possibility of quantitative estimation of fibrosis liver. In this technique, it is important to know how much this model can express actual data. In this paper, we evaluate the accuracy of approximation of the amplitude distribution model for fibrotic liver. The Kullback Leibler (KL) divergence was used as an index of the accuracy of approximation of distribution. ROI set on the clinical image data was moved, and the accuracy of approximation on the entire image was evaluated. As a result, it became clear that the proposed model can be approximated from a normal liver to a cirrhotic liver when there are neither a blood vessel nor tissue boundaries.
Keyword (in Japanese) (See Japanese page) 
(in English) medical ultrasound / Rayleigh distribution / statistical analysis / quantitative diagnosis / diffuse liver disease / hepatitis fibrosis / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 419, US2010-113, pp. 7-12, Feb. 2011.
Paper # US2010-113 
Date of Issue 2011-02-14 (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 US2010-113

Conference Information
Committee US  
Conference Date 2011-02-21 - 2011-02-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Acoustic Imaging, General, etc 
Paper Information
Registration To US 
Conference Code 2011-02-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accuracy analysis of echo amplitude distribution model for fibrotic liver 
Sub Title (in English)  
Keyword(1) medical ultrasound  
Keyword(2) Rayleigh distribution  
Keyword(3) statistical analysis  
Keyword(4) quantitative diagnosis  
Keyword(5) diffuse liver disease  
Keyword(6) hepatitis fibrosis  
Keyword(7)  
Keyword(8)  
1st Author's Name Yu Igarashi  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Tadashi Yamaguchi  
2nd Author's Affiliation Chiba University (Chiba Univ.)
3rd Author's Name Hiroyuki Hachiya  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2011-02-21 10:10:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2010-113 
Volume (vol) vol.110 
Number (no) no.419 
Page pp.7-12 
#Pages 6 
Date of Issue 2011-02-14 (US) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan