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Paper Abstract and Keywords
Presentation 2009-05-29 14:45
The Writing Sample for the Conference
Yoshinori Hayakawa, Sayuri Yoshino, Kiichi Tsuji, Kazuhiro Ando (Toin Univ. of Yokohama), Kiyomi Ishida (Teikyo Junior College) US2009-11
Abstract (in Japanese) (See Japanese page) 
(in English) Computer simulation using Finite Element Method(AMSYS10.0) was achieved assuming fat (Elasticity modulus 18kPa), mammary glands (Elasticity modulus 28kPa), and breast cancer (Elasticity modulus 108kPa). Poisson’s ratio was assumed to be 0.49 for each tissue.
The shape of fat was hemisphere of diameter of 0.04m, while the shapes of mammary glands and breast cancer
Was assumed to be sphere of o,o1m in diameter. The phantom was pressed from up word by uniform pressure of 5kPa. These results were taken as kind of experiment. From these results the ratio of thickness of each tissue R=(thickness of tissue after pressing/ thickness of tissue before pressing) was obtained. Iteration calculations were achieved where assuming certain elasticity modulus, the ratio R’ for each tissue were calculated. Comparing R and R’, feed back if R’ is smaller than R, then elasticity modulus were made a little bigger and vice versa. After 12 times iteration, elasticity modulus of original value are a obtained within the error of 10%. In addition real phantom experiments were achieved, where fat was created by ultra soft urethane resin, mammary glands and breast cancer by
Silicon resin of different kind. The phantom was pressed by water bag, where cross section of phantom was depicted by ultrasound echo technique. The iterative simulation was then achieved with favorable results.
Keyword (in Japanese) (See Japanese page) 
(in English) breast cancer / elasticity modulus / in vivo measurement / phantom experiment / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 68, US2009-11, pp. 19-19, May 2009.
Paper # US2009-11 
Date of Issue 2009-05-22 (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 US2009-11

Conference Information
Committee US  
Conference Date 2009-05-29 - 2009-05-29 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To US 
Conference Code 2009-05-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Writing Sample for the Conference 
Sub Title (in English)  
Keyword(1) breast cancer  
Keyword(2) elasticity modulus  
Keyword(3) in vivo measurement  
Keyword(4) phantom experiment  
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1st Author's Name Yoshinori Hayakawa  
1st Author's Affiliation Toin University of Yokohama (Toin Univ. of Yokohama)
2nd Author's Name Sayuri Yoshino  
2nd Author's Affiliation Toin University of Yokohama (Toin Univ. of Yokohama)
3rd Author's Name Kiichi Tsuji  
3rd Author's Affiliation Toin University of Yokohama (Toin Univ. of Yokohama)
4th Author's Name Kazuhiro Ando  
4th Author's Affiliation Toin University of Yokohama (Toin Univ. of Yokohama)
5th Author's Name Kiyomi Ishida  
5th Author's Affiliation Teikyo Junior College (Teikyo Junior College)
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Speaker Author-1 
Date Time 2009-05-29 14:45:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2009-11 
Volume (vol) vol.109 
Number (no) no.68 
Page p.19 
#Pages 1 
Date of Issue 2009-05-22 (US) 

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