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Paper Abstract and Keywords
Presentation 2013-03-01 14:10
Development of Improved Transducer for Acoustic Impedance Measurement of In vivo Bone by Transducer Vibration Method
Tetsuya Yamamoto, Masasumi Yoshizawa (TMCIT) EMD2012-113
Abstract (in Japanese) (See Japanese page) 
(in English) For the diagnosis of fracture associated with bone-thinning osteoporosis, we have developed a transducer vibration method for interference-based reflection-type in vivo measurement for acoustic impedance of bone. The measurement can be carried out without binding the patient and in a short time. The acoustic impedance method can be used as an osteoporosis diagnostic tool for periodic examination, since ultrasound causes no damage to the human body. Furthermore, since this method based on the reflection method, the measurement site is not limited as compared with transmission method. The transducer vibration method needs to have a variable length region of the transmission line. The conventional transducer for this method didn’t have the region, the acoustic coupler added on the surface of the transducer behaved as the variable length region. However, it is hard to vibrate the transducer without fall away from the body. In this paper, we describe a method to improve the transducer by including the variable length region of the transmission line in the transducer.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasound / Bone density measurement / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 453, EMD2012-113, pp. 17-20, March 2013.
Paper # EMD2012-113 
Date of Issue 2013-02-22 (EMD) 
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)
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Conference Information
Committee EMD  
Conference Date 2013-03-01 - 2013-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Nippon Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Graduation and master's thesis 
Paper Information
Registration To EMD 
Conference Code 2013-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of Improved Transducer for Acoustic Impedance Measurement of In vivo Bone by Transducer Vibration Method 
Sub Title (in English)  
Keyword(1) Ultrasound  
Keyword(2) Bone density measurement  
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1st Author's Name Tetsuya Yamamoto  
1st Author's Affiliation Tokyo Metropolitan College of Industrial Technology (TMCIT)
2nd Author's Name Masasumi Yoshizawa  
2nd Author's Affiliation Tokyo Metropolitan College of Industrial Technology (TMCIT)
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Speaker Author-1 
Date Time 2013-03-01 14:10:00 
Presentation Time 15 minutes 
Registration for EMD 
Paper # EMD2012-113 
Volume (vol) vol.112 
Number (no) no.453 
Page pp.17-20 
#Pages 4 
Date of Issue 2013-02-22 (EMD) 

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