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Paper Abstract and Keywords
Presentation 2026-07-29 15:10
Wave propagation simulation in a rat tibia pseudofracture model using FDTD method
Shota Kitajima, Yuta Murakami, Yusei Matsumoto, Mami Matsukawa (Doshisha Univ.) US2026-37
Abstract (in Japanese) (See Japanese page) 
(in English) Low-intensity pulsed ultrasound (LIPUS) treatment of bone fractures shortens the bone-healing period by approximately 30–40%. The mechanism by which ultrasound pulse irradiation promotes bone remains unclear, however, one possibility is a contribution of the bone piezoelectricity. The piezoelectric constant d₁₄ of bone is known to be particularly large, which implies that shear stress has a strong influence on ultrasound-induced electric potentials. In this study, therefore, we constructed a 3D digital bone model based on X-ray CT data of a rat tibia. We introduced a small hole as a pseudo fracture and simulated ultrasonic wave propagation considering the LIPUS treatment using the finite-difference time-domain (FDTD) method. Furthermore, to investigate the effect of complicated shape of bone, we also simulated wave propagation in a digital elliptic cylinder model, and showed that the complex geometry and shape of bone around the pseudo fracture induces larger stress, which may influence the bone formation.
Keyword (in Japanese) (See Japanese page) 
(in English) Bone regeneration / FDTD / LIPUS / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 131, US2026-37, pp. 22-25, July 2026.
Paper # US2026-37 
Date of Issue 2026-07-22 (US) 
ISSN 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 US2026-37

Conference Information
Committee US  
Conference Date 2026-07-29 - 2026-07-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Osaka Suita Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Material characterization, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2026-07-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Wave propagation simulation in a rat tibia pseudofracture model using FDTD method 
Sub Title (in English)  
Keyword(1) Bone regeneration  
Keyword(2) FDTD  
Keyword(3) LIPUS  
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1st Author's Name Shota Kitajima  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Yuta Murakami  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Yusei Matsumoto  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
4th Author's Name Mami Matsukawa  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2026-07-29 15:10:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2026-37 
Volume (vol) vol.126 
Number (no) no.131 
Page pp.22-25 
#Pages 4 
Date of Issue 2026-07-22 (US) 

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